15 Best California King Mattresses, Compared
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Finding the best california king mattresses requires comparing strict specifications rather than subjective claims. We analyzed 15 options ranked by their published data. The top pick is the EGOHOME 12-Inch Cal King Gel Memory Foam Mattress because its 12-inch height and medium-firm rating provide balanced support. These picks are based on the specifications published on the listings. This guide helps you decide which mattress fits your sleeping position and bed frame needs.
Quick picks
The best fit for you
- You need balanced medium-firm support with gel cooling EGOHOME 12-Inch Cal King Gel Memory Foam Mattress This 12-inch medium-firm memory foam model uses a cooling gel cover for temperature regulation.
- You want a washable cover for easy maintenance FDW 10-Inch Gel Memory Foam California King Mattress The FDW model features a zippered, washable cover and ventilated gel comfort layer.
- You prefer a slim low-profile hybrid design Zinus 8-Inch California King Hybrid Mattress This 8-inch hybrid mattress offers interconnected coil support in a compact profile.
- You seek a tall thick profile for deep contouring Sweetnight CoolNest 14-Inch Cal King Mattress The Sweetnight CoolNest provides a 14-inch all-foam build with five-zone ergonomic contouring.
- You want medium-firm support with reinforced edges Grbsy 14-Inch California King Hybrid Mattress The Grbsy hybrid mattress combines zoned pocketed coils with reinforced edges for stability.
Our 15 picks
EGOHOME 12-Inch Cal King Gel Memory Foam Mattress
Best for: all-position sleepers seeking medium-firm memory foam
- Size
- California King (what this guide is about)
- Thickness
- 12 in
- Firmness
- Medium Firm
- Mattress Construction
- Gel memory foam
- Comfort Layer
- Green tea gel memory foam
- Certification
- CertiPUR-US, Fiberglass Free
View on Amazon: EGOHOME 12-Inch Cal King Gel Memory Foam Mattress
The EGOHOME 12-inch California King mattress is an all-foam bed built with green tea gel memory foam. It measures 72 inches wide by 84 inches long and provides a medium-firm feel. The core uses an open bubble hole foam structure designed for continuous airflow and pressure relief. If you need a standard California King footprint that supports all sleeping positions without metal coils, this design fits your bedroom setup.
Pros
- 12-inch profile with standard 72 by 84-inch California King dimensions
- Infused with green tea gel to help regulate body temperature
- Bubble hole foam structure supports airflow and breathability
- All-foam construction dampens motion and reduces noise transfer
Cons
- Contains no pocketed coils or hybrid innerspring support
- Only offered in a single medium-firm comfort option
Good fit if
- You want an all-foam California King mattress with a 12-inch thickness.
- You prefer a medium-firm feel designed for all sleeping postures.
- You want cooling gel memory foam to dissipate body heat.
Skip if
- You prefer the bounce and edge support of hybrid coil systems.
- You need a dedicated soft plush or extra firm feel.
Verdict: EGOHOME 12-Inch Cal King Gel Memory Foam Mattress delivers balanced medium-firm foam support across a full California King surface. It suits sleepers seeking motion isolation and gel temperature regulation without internal steel springs.
FDW 10-Inch Gel Memory Foam California King Mattress
Best for: all-position sleepers wanting a washable cover
- Size
- California King (what this guide is about)
- Thickness
- 10 in
- Firmness
- Medium Firm
- Mattress Construction
- Gel memory foam
- Support Core
- 7.5 in high-density base support foam
- Comfort Layer
- 2.5 in gel memory foam
View on Amazon: FDW 10-Inch Gel Memory Foam California King Mattress
This FDW California King mattress provides an all-foam sleep surface measuring 72 inches wide by 84 inches long. Its 10-inch profile combines a 2.5-inch ventilated gel memory foam comfort layer with a 7.5-inch high-density base core. Rated medium firm, it gives you full-body support across back, side, and stomach sleeping positions while utilizing a removable, machine-washable zippered cover for routine upkeep.
Pros
- 2.5-inch ventilated gel memory foam comfort layer
- 7.5-inch high-density base support core
- Removable and machine-washable zippered cover
- CertiPUR-US certified foam construction
Cons
- Requires up to 72 hours to expand fully
- Thinner 10-inch profile than 12- or 14-inch options
- No coil system or hybrid edge support listed
Good fit if
- You sleep on your back, side, or stomach and want medium-firm foam.
- You want a removable, machine-washable cover for easier maintenance.
- You prefer a 10-inch dual-layer memory foam build without springs.
Skip if
- You prefer a hybrid mattress built with innerspring pocket coils.
- You want a thicker profile exceeding 10 inches in height.
Verdict: FDW 10-Inch Gel Memory Foam California King delivers dual-layer foam construction with balanced support for multiple sleeping positions. Its zippered, washable cover and ventilated gel comfort layer make it a practical all-foam choice.
Zinus 8-Inch California King Hybrid Mattress
Best for: low-profile California King hybrid support
- Size
- California King (what this guide is about)
- Thickness
- 8 Inch
- Firmness
- Medium Feel
- Mattress Construction
- Foam and spring hybrid
- Support Core
- Interconnected heavy-gauge steel coils
- Comfort Layer
- CertiPUR-US certified foam
View on Amazon: Zinus 8-Inch California King Hybrid Mattress
The Zinus 8-Inch California King Hybrid Mattress pairs CertiPUR-US certified foam with heavy-gauge interconnected steel coils. At 8 inches thick, it offers a lower profile than the 10- to 14-inch options on this list while maintaining a medium firmness feel. It measures 72 by 84 inches, supports up to 500 pounds, and ships compressed in a box. This build suits you if you want traditional hybrid support in a slim form factor.
Pros
- CertiPUR-US certified foam and OEKO-TEX certified cover
- Heavy-gauge interconnected steel coils provide continuous support
- Supports up to 500 pounds
- Includes a 10-year limited warranty
Cons
- Low 8-inch overall height
- Uses interconnected steel coils rather than individually pocketed coils
Good fit if
- You want a low-profile 8-inch mattress that fits a California King frame.
- You prefer a medium feel with interconnected steel spring support.
- You need a mattress rated to hold up to 500 pounds.
Skip if
- You want a thicker profile exceeding 8 inches.
- You require independent pocketed coils to isolate motion.
Verdict: Zinus 8-Inch California King Hybrid Mattress delivers traditional interconnected coil support and certified foam inside a slim 8-inch profile. It provides a medium feel backed by a 500-pound weight capacity.
Amazon Basics 12-Inch Plush Cal King Mattress
Best for: sleepers wanting soft plush all-foam contouring
- Size
- California King (what this guide is about)
- Thickness
- 12 in
- Firmness
- Soft Plush
- Mattress Construction
- Memory foam
- Support Core
- Convoluted foam base
- Comfort Layer
- Memory foam
View on Amazon: Amazon Basics 12-Inch Plush Cal King Mattress
This California King mattress measures 84 by 72 inches with a 12-inch profile. Inside, you get a three-layer foam build featuring a plush memory-foam top, a ventilated middle layer, and a convoluted base core. It provides a soft feel that conforms to your body across multiple sleep positions. This model suits you if you want an all-foam setup with certified materials for your primary bedroom or guest room.
Pros
- Three-layer build includes a ventilated middle layer and convoluted base foam
- CertiPUR-US certified foam and Oeko-Tex certified cover fabric
- Plush memory foam comfort layer conforms to body contours
Cons
- Requires up to 72 hours after unboxing to reach full expansion
- All-foam construction lacks steel support coils
Good fit if
- You want a soft plush California King surface that conforms to your body
- You look for certified components including CertiPUR-US foam and Oeko-Tex fabric
- You need a 12-inch all-foam mattress for a master or guest bedroom
Skip if
- You prefer a medium-firm or firm sleeping surface
- You want the spring support and responsiveness of a hybrid mattress
Verdict: Amazon Basics 12-Inch Plush Cal King Mattress provides a soft three-layer foam design with dedicated ventilation holes and certified materials. It offers conforming plush comfort for California King bed frames.
Novilla 12-Inch California King Gel Memory Foam Mattress
Best for: couples seeking motion-isolating gel memory foam
- Size
- California King (what this guide is about)
- Thickness
- 12 in
- Mattress Construction
- Gel memory foam
- Support Core
- High-density foam
- Comfort Layer
- NanoGel memory foam
- Cover Material
- Breathable knitted fabric
View on Amazon: Novilla 12-Inch California King Gel Memory Foam Mattress
This 12-inch California King mattress from Novilla uses an all-foam build featuring three layers, including NanoGel memory foam, comfort foam, and a high-density base core. Measuring 72 by 84 inches, it provides dedicated motion isolation to prevent sleep disruptions across the bed. It suits you if you share a bed and want CertiPUR-US certified memory foam with a breathable knitted cover for reliable pressure relief.
Pros
- Three-layer build with high-density base foam and comfort foam
- Top layer includes 30% more NanoGel for heat absorption
- CertiPUR-US certified foam and OEKO-TEX Standard 100 cover
- Includes 10-year manufacturer protection
Cons
- Requires up to 72 hours to air out and reshape fully
- All-foam design contains no supportive steel coils
Good fit if
- You want motion absorption to prevent partner disturbances
- You prefer a 12-inch all-foam mattress with certified materials
- You need a bed compatible with various California King frames or floor use
Skip if
- You prefer the responsive bounce of an innerspring hybrid
- You need a bed ready for immediate use without a 72-hour expansion period
Verdict: Novilla 12-Inch Gel Memory Foam California King Mattress delivers balanced support and vibration dampening across a spacious 72 by 84-inch profile. Its three-layer construction provides certified materials tailored for quiet, motion-free sleep.
LUCID 10 Inch Gel Memory Foam Plush Cal King
Best for: Side sleepers seeking plush cooling foam
- Size
- California King (what this guide is about)
- Thickness
- 10 in
- Firmness
- Plush
- Mattress Construction
- Three layers of memory foam
- Support Core
- 5.5-inch high-density base
- Comfort Layer
- Gel memory foam
View on Amazon: LUCID 10 Inch Gel Memory Foam Plush Cal King
The LUCID 10 Inch Gel Memory Foam Mattress offers a plush sleep surface in California King size. It features 2.5 inches of gel-infused memory foam to draw heat away from your body. A 2-inch transition layer and 5.5-inch high-density base provide support. The mattress is CertiPUR-US certified and ships compressed in a box. It works with adjustable bases and platform frames without a box spring.
Pros
- 10-inch total thickness with plush feel
- Gel-infused foam layer for cooling
- CertiPUR-US certified foam construction
- Ships compressed in a box
- Compatible with adjustable bases
Cons
- 10-inch profile is shorter than many 14-inch competitors
- Plush feel may lack support for heavy stomach sleepers
- No remote or app connectivity features
Good fit if
- You prefer a soft, sink-in memory foam feel
- You need a mattress compatible with adjustable bases
- You want a cooling gel-infused foam layer
Skip if
- You require a firmer medium-firm or firm feel
- You prefer a taller 14-inch or thicker profile
- You need smart features or app control
Verdict: LUCID 10 Inch Plush Gel Foam Cal King suits side sleepers who want a soft, cooling surface. It delivers basic comfort and support in a compact, easy-to-handle package.
Sweetnight CoolNest 14-Inch Cal King Mattress
Best for: Hot sleepers wanting thick zoned memory foam
- Size
- California King (what this guide is about)
- Thickness
- 14 Inch
- Firmness
- Medium
- Mattress Construction
- Memory foam
- Comfort Layer
- Gel-infused memory foam
- Cover Material
- 3D-woven cover
View on Amazon: Sweetnight CoolNest 14-Inch Cal King Mattress
The Sweetnight CoolNest is a 14-inch California King mattress built entirely from memory foam. It combines gel-infused foam with phase-change material and a ventilated 3D-woven cover to regulate temperature during sleep. The internal five-zone support structure cushions your body from head to toe while reducing surface motion transfer. If you need targeted ergonomic alignment and multi-layered foam to isolate movement from a partner, this mattress fits your bedroom setup.
Pros
- Thick 14-inch profile with 5-zone targeted body support
- CoolNest system pairs gel memory foam with phase change material foam
- Breathable 3D-woven cover with ventilation pores
- CertiPUR-US certified foams and 10-year protection coverage
Cons
- Requires up to 72 hours to expand fully after unboxing
- All-foam construction lacks the bounce of steel coil springs
- Substantial weight at 83.4 pounds makes moving it difficult
Good fit if
- You want a deep 14-inch California King mattress with ergonomic 5-zone zoning.
- You share a bed and need dense memory foam layers to absorb partner motion.
- You sleep warm and want gel-infused and phase-change cooling foams.
Skip if
- You prefer the active bounce and edge pushback of an innerspring hybrid base.
- You need a mattress ready for immediate sleep without a 72-hour expansion wait.
Verdict: Sweetnight CoolNest 14-Inch Cal King Mattress delivers a tall all-foam profile engineered with 5-zone ergonomic contouring and phase-change cooling. It suits hot sleepers looking to minimize motion transfer across a large frame without hybrid coils.
MLILY EGOHOME 14-Inch Cal King Memory Foam Mattress
Best for: medium-firm support and back pain relief
- Size
- California King (what this guide is about)
- Thickness
- 14 "
- Firmness
- Medium Firm
- Mattress Construction
- Memory Foam
- Support Core
- High density base foam
- Comfort Layer
- Cooper gel aerofuion memory foam
View on Amazon: MLILY EGOHOME 14-Inch Cal King Memory Foam Mattress
This 14-inch California King mattress pairs high-density base foam with copper gel memory foam and a graphene-infused cooling cover. Its medium-firm profile gives you structured support targeted for back pain relief, backed by an endorsement from the International Chiropractors Association. If you need a thick all-foam build that controls heat without coils, this bed delivers full-body support.
Pros
- Thick 14-inch profile with high-density base foam
- Copper gel memory foam and graphene cover dissipate heat
- Endorsed by the International Chiropractors Association
- Fiberglass-free flame retardant layer
Cons
- No trial period offered; opened items cannot be returned
- Heavy 104-pound weight makes positioning difficult
- All-foam construction lacks innerspring coil bounce
Good fit if
- You want a 14-inch medium-firm mattress built for back support.
- You prefer all-foam construction with cooling materials and no fiberglass.
- You value chiropractor-endorsed, CertiPUR-US certified foams.
Skip if
- You need an at-home trial period with return eligibility.
- You prefer the active pushback and airflow of steel coils.
Verdict: MLILY EGOHOME 14-Inch Cal King Memory Foam Mattress provides deep 14-inch medium-firm contouring with cooling foam layers and zero fiberglass. It delivers certified back support if you are confident buying without a trial period.
Signature Design by Ashley 10 Inch Memory Foam
Best for: Back and stomach sleepers needing firm support
- Size
- California King (what this guide is about)
- Thickness
- 10 in
- Firmness
- Medium Firm
- Mattress Construction
- Memory foam
- Support Core
- Firm support foam
- Comfort Layer
- Gel memory foam
View on Amazon: Signature Design by Ashley 10 Inch Memory Foam
This Signature Design by Ashley mattress offers a 10-inch profile in California King size. It uses a medium-firm feel, combining gel memory foam with a firm support core. The CertiPUR-US certified foam targets back and stomach sleepers. A premium stretch knit cover wraps the layers. It weighs 71 pounds and includes a 10-year limited warranty for durability.
Pros
- Medium-firm support ideal for back and stomach sleepers
- Gel memory foam contours to your body
- CertiPUR-US certified foam for low emissions
- 10-inch height fits most standard frames
- 10-year limited warranty included
Cons
- 10-inch profile is thinner than many 12- or 14-inch competitors
- All-foam construction may lack the bounce of hybrid models
- No remote or app control features listed
Good fit if
- You sleep on your back or stomach and need firm support
- You prefer a medium-firm feel over plush softness
- You want a CertiPUR-US certified foam mattress
Skip if
- You need a thicker 12-inch or 14-inch profile
- You prefer the bounce and airflow of a hybrid or innerspring design
- You are a side sleeper who needs a softer surface
Verdict: Signature Design by Ashley 10" Cal King Memory Foam provides reliable medium-firm support for back and stomach sleepers who prefer a traditional foam feel over a thicker profile.
Nectar Luxe 14-Inch Cal King Memory Foam Mattress
Best for: Side sleepers wanting thick memory foam support
- Size
- California King (what this guide is about)
- Thickness
- 14 inches
- Firmness
- Medium
- Mattress Construction
- Memory Foam
- Support Core
- Adaptive support layer
- Comfort Layer
- Contouring memory foam
View on Amazon: Nectar Luxe 14-Inch Cal King Memory Foam Mattress
The Nectar Luxe is a 14-inch all-foam California King mattress built with a medium firmness profile. It features contouring memory foam, an adaptive support layer, and cooling fibers. Measuring 72 by 84 inches, it fits standard California King bed frames and provides extra thickness over base models. This design suits you if you are a side or combination sleeper seeking pressure relief around your hips and back.
Pros
- 14-inch profile with contouring memory foam
- Medium firmness designed for side and combination sleepers
- Constructed with cooling fibers and an adaptive support layer
- Standard 72-by-84-inch California King dimensions
Cons
- Heavy 111-pound weight makes moving difficult
- All-foam build lacks innerspring coil bounce
- Requires 24 hours to fully expand after unboxing
Good fit if
- You are a side or combination sleeper wanting a medium firmness feel.
- You prefer a thick 14-inch profile with memory foam contouring.
- You need targeted pressure relief along your hips and back.
Skip if
- You prefer a hybrid mattress built with traditional metal coils.
- You need a lightweight mattress that is easy to move without help.
Verdict: Nectar Luxe 14-Inch Cal King Memory Foam Mattress delivers deep contouring and balanced medium support across California King bed frames. Its 14-inch profile and cooling fibers provide reliable cushioning for combination and side sleepers.
Casper Element Cal King Medium Foam
Best for: partners seeking motion isolation and medium support
- Size
- California King (what this guide is about)
- Thickness
- 10 in
- Firmness
- Medium
- Mattress Construction
- Breathable, cooling memory foam
- Comfort Layer
- Flex Foam
- Certification
- CertiPUR-US certified
The Casper Element is a 10-inch California King memory foam mattress with a medium feel. It uses breathable open-cell Flex Foam to help regulate temperature. The layered foam construction provides advanced motion isolation. This design offers balanced support for all sleep styles. It includes a 10-year limited warranty and CertiPUR-US certification. The 87-pound build is manageable for setup.
Pros
- Medium firmness level for balanced support
- Open-cell Flex Foam promotes airflow
- Advanced motion isolation layers
- CertiPUR-US certified foams
Cons
- 10-inch profile is shorter than the 14-inch average
- Standard 10-year limited warranty
- 87 pounds adds handling weight
Good fit if
- You share a bed and need motion isolation
- You prefer a medium feel for back or side sleeping
- You want a breathable foam surface
Skip if
- You require a plush or soft feel
- You prefer a hybrid or innerspring construction
- You want a taller 12-inch or 14-inch profile
Verdict: Casper Element Cal King Medium Foam suits partners who prioritize motion isolation and a breathable medium feel. It fits those who do not need a high-profile hybrid design.
MLILY 14-Inch Green Tea Cal King Mattress
Best for: pressure relief with green tea memory foam
- Size
- California King (what this guide is about)
- Thickness
- 14 in
- Firmness
- Medium
- Mattress Construction
- Green tea memory foam
- Comfort Layer
- Gel-infused memory foam
- Cover Material
- 92% Cotton, 8% Polyester rib fabric
The MLILY 14-Inch Green Tea Cal King Mattress gives you an all-foam build tailored for platform beds. Measuring 72 by 84 inches, it combines green tea memory foam with a gel-infused comfort layer rated at a medium 5 out of 10 firmness. This 14-inch profile provides gentle contouring around your shoulders and hips without coils. It suits you if you want deep foam cushioning and a fiberglass-free cotton-blend fire barrier.
Pros
- Gel-infused memory foam designed to dissipate heat
- Fiberglass-free cover made of 92% cotton and 8% polyester rib fabric
- CertiPUR-US certified foam produced without ozone depleters
- Thick 14-inch profile provides body-cradling pressure relief
Cons
- All-foam construction lacks the bounce of innerspring coils
- Weighs 88 pounds, which may make repositioning difficult
Good fit if
- You prefer a medium 5 out of 10 firmness level with gentle contouring.
- You want a fiberglass-free inner flame barrier made with natural cotton.
- You plan to use a platform bed or daybed base.
Skip if
- You prefer a firm sleep surface rather than adaptive foam contouring.
- You want the edge support and pushback of steel innersprings.
Verdict: MLILY 14-Inch Green Tea Cal King Mattress pairs a 14-inch gel-infused memory foam build with a fiberglass-free cotton-blend cover for pressure relief. It delivers balanced contouring for sleepers who want an all-foam platform bed setup.
COOL GEL 8-Inch Memory Foam
Best for: Low-profile cooling foam needs
- Size
- California King (what this guide is about)
- Thickness
- 8 in
- Firmness
- Medium Firm
- Mattress Construction
- Memory foam
- Support Core
- High-density foam
- Comfort Layer
- Cooling gel memory foam
This 8-inch California King mattress uses gel-infused memory foam for pressure relief and cooling. It features a medium-firm feel with an open-cell structure to boost airflow. The CertiPUR-US certified foam is fiberglass-free and made in the USA. It arrives compressed in a box for easy setup. This profile suits those who prefer a lower bed height or need a budget-friendly option for guest rooms or dorms.
Pros
- 8-inch thickness provides a lower profile
- Gel-infused memory foam cools the sleep surface
- CertiPUR-US certified and fiberglass-free
- Medium-firm support for spinal alignment
Cons
- 8-inch profile is thinner than most competitors
- Memory foam construction may limit airflow compared to hybrids
- Heavier at 52 pounds for its size
Good fit if
- You want a lower bed height for easier access
- You need a certified, fiberglass-free foam mattress
- You are furnishing a guest room or dorm
Skip if
- You prefer a plush, deep-contouring feel
- You want a thicker, luxury profile
- You need a hybrid coil system for bounce
Verdict: COOL GEL 8-Inch Memory Foam is a practical, budget-conscious choice for those who prioritize cooling foam and a lower bed height. It fits buyers seeking a simple, certified foam solution for secondary rooms.
Grbsy 14-Inch California King Hybrid Mattress
Best for: sleepers wanting tall, zoned hybrid back support
- Size
- California King (what this guide is about)
- Thickness
- 14 in
- Firmness
- Medium Firm
- Mattress Construction
- Hybrid
- Support Core
- Pocketed spring base
- Comfort Layer
- Cooling gel memory foam
View on Amazon: Grbsy 14-Inch California King Hybrid Mattress
The Grbsy 14-Inch California King Hybrid Mattress combines a pocketed spring core with multi-layer foams and a Euro-top cover. Its 14-inch profile includes a 7-zone coil system with over 1,000 springs, copper- and charcoal-infused foam, and gel memory foam. If you need targeted spinal alignment and reduced motion transfer without losing edge support, this medium-firm California King gives you structured full-body contouring for back, side, and combination sleeping.
Pros
- 7-zone support core with over 1,000 independent pocket springs
- Reinforced perimeter combines edge-responsive coils and foam
- Infused with cooling gel, graphene, charcoal, and copper ions
- CertiPUR-US and OEKO-TEX certified fiberglass-free build
- Includes a 365-night trial and a 10-year warranty
Cons
- Substantial 99-pound weight makes moving or rotating difficult
- Tall 14-inch profile requires deep-pocket fitted sheets
- Only available in a single medium-firm comfort level
Good fit if
- You want a 14-inch hybrid with zoned support to isolate motion.
- You prefer copper- and charcoal-infused materials without fiberglass.
- You want a long 365-night home trial period.
Skip if
- You need a lightweight mattress that is easy to reposition alone.
- You prefer a low profile under 12 inches for standard bedding.
- You want a plush or extra-firm feel rather than medium firm.
Verdict: Grbsy 14-Inch California King Hybrid Mattress delivers zoned pocketed coil support paired with cooling infusions and reinforced edges. It gives you a tall, medium-firm hybrid build backed by a 365-night trial.
Novilla AiryFlow 14-Inch Cal King
Best for: Hot sleepers needing cooling and zoning
- Size
- California King (what this guide is about)
- Thickness
- 14 inches
- Firmness
- Medium Firm
- Mattress Construction
- Memory Foam
- Support Core
- High-density base foam
- Comfort Layer
- NanoGEL memory foam
This Novilla mattress uses 14 inches of memory foam with a medium-firm feel. Graphene-infused fabric and 30% cooling gel manage heat, while 3D mesh promotes airflow. The 3-zone support targets shoulders, waist, and hips for spinal alignment. It isolates motion for couples. CertiPUR-US and OEKO-TEX certifications ensure safe materials. It weighs 86.5 pounds.
Pros
- 14-inch thickness with high-density base foam
- Graphene-infused cover conducts heat 2x faster
- 3-zone foam structure for targeted support
- Medium-firm feel with motion isolation
- CertiPUR-US and OEKO-TEX certified materials
Cons
- No adjustable firmness settings
- Heavy at 86.5 pounds
- Single medium-firm firmness option
Good fit if
- You sleep hot and need active cooling
- You prefer a plush yet supportive feel
- You want motion isolation for couples
Skip if
- You need adjustable firmness levels
- You prefer a lightweight mattress
- You want a hybrid coil system
Verdict: Novilla AiryFlow Graphene 14-Inch Cal King offers robust cooling and zoning for hot sleepers. It suits couples needing motion isolation and consistent medium-firm support.
Specifications side by side
| Spec | EGOHOME 12-Inch Cal King Gel Memory Foam Mattress | FDW 10-Inch Gel Memory Foam California King Mattress | Zinus 8-Inch California King Hybrid Mattress | Amazon Basics 12-Inch Plush Cal King Mattress | Novilla 12-Inch California King Gel Memory Foam Mattress | LUCID 10 Inch Gel Memory Foam Plush Cal King | Sweetnight CoolNest 14-Inch Cal King Mattress | MLILY EGOHOME 14-Inch Cal King Memory Foam Mattress | Signature Design by Ashley 10 Inch Memory Foam | Nectar Luxe 14-Inch Cal King Memory Foam Mattress | Casper Element Cal King Medium Foam | MLILY 14-Inch Green Tea Cal King Mattress | COOL GEL 8-Inch Memory Foam | Grbsy 14-Inch California King Hybrid Mattress | Novilla AiryFlow 14-Inch Cal King |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | California King | California King | California King | California King | California King | California King | California King | California King | California King | California King | California King | California King | California King | California King | California King |
| Thickness | 12 in | 10 in | 8 Inch | 12 in | 12 in | 10 in | 14 Inch | 14 " | 10 in | 14 inches | 10 in | 14 in | 8 in | 14 in | 14 inches |
| Firmness | Medium Firm | Medium Firm | Medium Feel | Soft Plush | not specified | Plush | Medium | Medium Firm | Medium Firm | Medium | Medium | Medium | Medium Firm | Medium Firm | Medium Firm |
| Mattress Construction | Gel memory foam | Gel memory foam | Foam and spring hybrid | Memory foam | Gel memory foam | Three layers of memory foam | Memory foam | Memory Foam | Memory foam | Memory Foam | Breathable, cooling memory foam | Green tea memory foam | Memory foam | Hybrid | Memory Foam |
| Support Core | not specified | 7.5 in high-density base support foam | Interconnected heavy-gauge steel coils | Convoluted foam base | High-density foam | 5.5-inch high-density base | not specified | High density base foam | Firm support foam | Adaptive support layer | not specified | not specified | High-density foam | Pocketed spring base | High-density base foam |
| Comfort Layer | Green tea gel memory foam | 2.5 in gel memory foam | CertiPUR-US certified foam | Memory foam | NanoGel memory foam | Gel memory foam | Gel-infused memory foam | Cooper gel aerofuion memory foam | Gel memory foam | Contouring memory foam | Flex Foam | Gel-infused memory foam | Cooling gel memory foam | Cooling gel memory foam | NanoGEL memory foam |
| Cover Material | not specified | Soft, breathable, removable cover | OEKO-TEX certified mattress cover | Oeko-Tex certified top fabric | Breathable knitted fabric | not specified | 3D-woven cover | Graphene-Cool-Tech Cover | Stretch knit | not specified | not specified | 92% Cotton, 8% Polyester rib fabric | not specified | not specified | Graphene-infused fabric |
| Certification | CertiPUR-US, Fiberglass Free | CertiPUR-US | CertiPUR-US, OEKO-TEX, fiberglass free | CertiPUR-US | CertiPUR-US, OEKO-TEX Standard 100 | CertiPUR-US certified | CertiPUR-US certified | CertiPUR-US Certified, ICA Endorsed | CertiPUR-US certified | not specified | CertiPUR-US certified | CertiPUR-US certified, fiberglass-free | CertiPUR-US certified, Fiberglass free | CertiPUR-US, OEKO-TEX, fiberglass free | CertiPUR-US, OEKO-TEX, fiberglass-free |
| Special Features | Cooling green tea gel, pressure relief | Cooling ventilated foam, pressure relief | not specified | Breathable holes for ventilation | Pressure relief, cooling | Cooling gel infusion, pressure relief | 5-zone support, motion isolation | Motion Isolation | Pressure relief | not specified | Motion isolation, breathable, cooling | Cooling gel, pressure relief | Cooling gel, Pressure relief | not specified | 3-zone lumbar support, motion isolation |
| Intended Use | All sleep positions | Back, side, or stomach sleepers | not specified | Any bedroom or guest room | not specified | Side sleepers | Hot sleepers | Back Pain Relief | Back and stomach sleepers | Combination and side sleepers | All sleep styles | Platform bed, daybed | Kids, teens, and adults | Heat-sensitive sleepers | Back, side and stomach sleepers |
| Color | White | White | White | White/Grey | White | White | Grey & Blue | Black | White | White | Grey | White | White | Black | Grey |
| Dimensions | 84 × 72 × 12 inches | 84 × 72 × 10 inches | 84 × 72 × 8 inches | 84 × 72 × 12 inches | 84 × 72 × 12 inches | 20 × 20 × 42 inches | 84 × 72 × 14 inches | 84 × 72 × 14 inches | 83.5 × 71 × 10 inches | 84 × 72 × 14 inches | 84 × 72 × 10 inches | 84 × 72 × 14 inches | 75 × 12 × 12 inches | 84 × 72 × 14 inches | 84 × 72 × 14 inches |
| Weight | not specified | 74 pounds | 73.5 pounds | 73.6 pounds | 71 pounds | 58.8 pounds | 83.4 pounds | 104 pounds | 71 pounds | 111 pounds | 87 pounds | 88 pounds | 52 pounds | 99 pounds | 86.5 pounds |
| Model | 12 Inch | MEM-10CK-H6E-White | ZU-MSSA2BZI-08C | P22MD -12CK | NAMM12CLKWV17 | LU10CKPL30GF | SN14CLKGYMMPRO23N1 | MCE140CK000T | M69951 | ncfmluxea-s:calking | 950-000065-006 | GRNTEA14-CK-N | 410069-1170 | not specified | NAMM14CLKGYV60 |
Is a California King Size Worth the Extra Length?
A California King measures 72 by 84 inches. This adds four inches of length compared to a standard King. You gain extra space for taller frames or those who stretch out. The width remains the same, so lateral space does not increase. You must ensure your bedroom fits the longer footprint. The bed frame and sheets also require specific sizing to match this 84-inch length.
Worth it if
- You are taller than 6 feet and need extra legroom
- You stretch out fully while sleeping and need more length
- Your bedroom has sufficient space for the 84-inch length
Skip it if
- You share the bed with a partner and prioritize width over length
- Your bedroom is too small for the 72 by 84-inch footprint
- You prefer the standard King dimensions for easier sheet availability
If you want supplemental bedroom warmth, you can review wattage ratings across the best KING space heaters.
How We Selected These Mattresses
We identified California King mattresses by checking each Amazon listing for that specific size in the title or feature list. We included only one variant per product family to keep the comparison clean. All details come from the published specifications and feature lists on the listings. We did not physically handle any products.
The products are ordered by availability first, then by the listing's overall rating weighted by the number of ratings, and finally by how many guide criteria the specs meet. We focus on dimensions, firmness, and construction materials. Prices and stock levels are shown live on the page and are refreshed at least daily.
How to Choose Your Cal King Mattress
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Check Mattress Thickness
You should match the mattress height to your bed frame and personal preference. The options in this guide range from 8 to 14 inches. If you need a low profile, the Zinus 8-Inch Hybrid offers a slim build that fits under many bed rails. For deeper contouring, the Sweetnight CoolNest 14-Inch provides a tall foam profile. Ensure your sheets fit the chosen depth. Thicker models may require deep-pocket fitted sheets to stay secure during the night.
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Select Firmness Level
Firmness determines how your body sinks into the surface. Most options here are medium or medium-firm. The EGOHOME 12-Inch offers a balanced medium-firm feel suitable for most positions. If you prefer a softer surface for side sleeping, the LUCID 10-Inch Plush Gel Memory Foam delivers a plush feel. The Signature Design by Ashley 10-Inch provides firm support for back and stomach sleepers. Choose based on whether you want to sink in or feel supported on top.
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Choose Foam or Hybrid
Construction type affects motion isolation and airflow. All-foam models like the Novilla 12-Inch Gel Memory Foam isolate movement well, making them ideal for couples. The FDW 10-Inch also uses dual-layer foam for balanced support. If you want coil support, the Zinus 8-Inch Hybrid uses interconnected coils for traditional bounce. The Grbsy 14-Inch Hybrid pairs pocketed coils with foam for zoned support. Foam generally sleeps cooler with gel infusions, while hybrids offer more edge support.
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Verify Certifications
Look for CertiPUR-US certification to ensure the foam meets safety standards for content and emissions. The FDW 10-Inch Gel Memory Foam is certified, as is the Casper Element. This certification confirms the foam is made without harmful chemicals like ozone depleters. It also ensures low volatile organic compound emissions for better indoor air quality. If you are sensitive to materials, prioritizing certified products helps maintain a healthier sleeping environment without relying on unverified claims.
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Consider Cover Features
The cover material impacts maintenance and temperature. The FDW 10-Inch features a zippered, washable cover, which allows you to clean the surface directly. Most other models use a cooling gel cover, like the EGOHOME and LUCID, to help regulate heat. The MLILY Green Tea model uses a cotton-blend cover for breathability. Check if the cover is removable or washable. A washable cover simplifies upkeep, especially if you spill liquids or need to refresh the surface regularly.
Frequently asked questions
Do California King mattresses come in hybrid options?
Yes. The Zinus 8-Inch Hybrid Mattress uses traditional interconnected coils with certified foam. The Grbsy 14-Inch Hybrid Mattress features zoned pocketed coils. These models combine coil support with foam comfort layers for sleepers who prefer a mixed construction.
Which California King mattresses are best for hot sleepers?
Several models prioritize cooling. The Sweetnight CoolNest 14-Inch uses phase-change cooling and 5-zone ergonomic contouring. The Novilla AiryFlow 14-Inch incorporates graphene for robust cooling. Most other options, like the EGOHOME and LUCID, use gel-infused covers or ventilated layers to regulate temperature.
What is the thinnest California King mattress available in this list?
The thinnest options are 8 inches tall. The Zinus 8-Inch Hybrid and the COOL GEL 8-Inch Memory Foam both offer this low profile. These are suitable for sleepers who prefer a lower bed height or need to fit under specific frame clearances.
Are there California King mattresses with washable covers?
Yes. The FDW 10-Inch Gel Memory Foam Mattress features a zippered, washable cover. This allows you to clean the surface easily. Most other models listed do not specify a washable cover, relying instead on removable or fixed protective layers.
Which mattress is best for side sleepers needing pressure relief?
The LUCID 10 Inch Plush Gel Foam is designed for side sleepers. It offers a plush, soft surface with cooling gel. The MLILY 14-Inch Green Tea Mattress also targets pressure relief with its 14-inch gel-infused memory foam build and cotton-blend cover.
Do these mattresses require a box spring?
Most are sold as bed-in-a-box foam or hybrid units. They typically rest directly on a solid, slatted, or adjustable base. The Zinus Hybrid and FDW Memory Foam are packed in boxes for easy setup. Check your bed frame requirements for slat spacing.
What firmness levels are available for California King sizes?
You can find medium, medium-firm, and plush options. The EGOHOME and MLILY offer medium-firm support. The Casper Element and Nectar Luxe provide a medium feel. The Amazon Basics Plush and LUCID models cater to those seeking a softer, plush contouring experience.