REMIISS Mattress King Size Review (2026): A Spec-Based Look
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This remiiss mattress king size review focuses on a hybrid model built for stability. The REMIISS 12 Inch King Hybrid Mattress measures 12 inches thick and uses a firm support core. It combines high-density gel memory foam with over 800 individually wrapped pocket coils. This construction targets back, stomach, and combination sleepers who need strong spinal alignment. The design aims to reduce heat buildup and minimize motion transfer. You get a bed-in-a-box solution that expands within 48 to 72 hours. It is engineered to hold up to 600 pounds.
What stands out
- 12-inch thickness with a firm feel
- Over 800 individually wrapped pocket coils for support
- High-density gel memory foam comfort layer
- Fiberglass-free certified materials for safety
- Edge springs 30% denser than standard hybrids
Who it fits
Good fit for
This mattress suits back, stomach, and combination sleepers who prefer a firm surface. The 800+ pocket coils provide stable support that keeps your spine aligned. If you sleep hot, the breathable cover and gel foam help manage heat. Couples may appreciate the motion isolation from the independent coils. The 12-inch height fits most standard bed frames, including platforms and box springs. It is a practical choice if you want a durable, tool-free setup without fiberglass.
Who should skip it
You should look elsewhere if you prefer a plush, soft feel. This model is explicitly rated as firm, which may not suit side sleepers who need deep pressure relief for hips and shoulders. If you need a mattress that is ready to sleep on immediately, note that full expansion takes 48 to 72 hours. The breathable cover is not described as removable or washable. Also, if you require a specific smart feature or app integration, this basic hybrid design does not include those technologies.
Verdict: The REMIISS 12 Inch King Hybrid Mattress offers firm, coil-based support for back and stomach sleepers. It is a straightforward, fiberglass-free option for those who prioritize stability and heat management.
Key specs for REMIISS King
Size: King
This mattress measures 76 inches wide and 80 inches long. You get ample space to stretch out without disturbing a partner. It fits standard King bed frames and foundations. If you share your bed, this width allows for personal space. It is wider than Queen sizes, making it ideal for couples or larger bedrooms where floor space permits.
Thickness: 12 in
The mattress stands 12 inches tall, providing a substantial profile. This height allows for multiple comfort layers without feeling too low to the ground. It works well with most standard bed frames and headboards. You avoid the feeling of sleeping directly on the box spring. This thickness balances support depth with ease of access when getting in and out of bed.
Firmness: Firm
This rating indicates a solid, unyielding surface that resists deep sinking. It is designed to keep your spine aligned, particularly for back and stomach sleepers. You will feel supported rather than cradled. Side sleepers might find it too hard for hip relief. Compare this to plush models if you prefer a softer, sinking feel. It suits those who need strong lower back support.
Support Core: 800+ individually wrapped pocket coils
The base layer contains over 800 separate coils, each encased in fabric. This design allows each coil to move independently, contouring to your body shape. It reduces motion transfer, so partner movement is less likely to wake you. The individual wrapping also enhances airflow compared to solid foam bases. This core provides durable, targeted support across the entire mattress surface.
Design and Build Specifications
According to the listing, the REMIISS King mattress measures 76 inches wide and 80 inches long. It stands 12 inches tall and weighs 50 pounds. This substantial height allows for easy entry and exit. The weight suggests a dense build, which aids in stability but requires two people for setup.
The construction is a hybrid design featuring eight hundred or more individually wrapped pocket coils. These coils sit beneath a comfort layer of high-density gel memory foam. This combination targets firm support for back, stomach, and combination sleepers. The coils adapt to your body contours, while the foam relieves pressure points. The listing notes the coils reduce motion transfer by ninety percent, helping you avoid disturbance from a partner.
A breathable cover wraps the mattress to help maintain a cooler sleep surface. The design is fiberglass-free, meeting specific safety standards for materials. It arrives in a box, using a roll-and-rise technology for setup. You simply unroll it and allow forty-eight to seventy-two hours for full expansion. This mattress fits ninety-nine percent of bed frames, including platforms and box springs, offering versatile placement options in your bedroom.
Setup and Daily Use Guide
Setting up this REMIISS King mattress is designed to be straightforward. The product arrives in a box, utilizing a bed-in-a-box format. You simply unroll the mattress and remove the packaging. The listing notes a smart roll-and-rise technology, which aids in this process. Setup requires no tools. You do not need to assemble any frames or connect components. The mattress expands on its own once placed on your chosen support structure.
The REMIISS model is compatible with 99% of standard bed frames. This includes box springs, modern platform bases, and traditional foundations. You can also place it directly on the floor if you prefer. The 12-inch thickness and firm support core ensure it sits securely without sliding. The hybrid construction with 800+ individually wrapped pocket coils provides a stable base.
For daily use, the firm feel targets back, stomach, and combination sleepers. The high-density gel memory foam layer offers pressure relief while maintaining spinal alignment. The breathable cover helps manage heat, aiming for a cooler sleep surface. Motion isolation is handled by the independent coils, which reduce transfer between partners. The edge support is reinforced with denser springs to prevent roll-off. This setup allows for consistent, undisturbed rest every night without complex adjustments or maintenance.
Before You Buy REMIISS King Mattress
Before adding this REMIISS King mattress to your bedroom, verify your bed frame compatibility. The listing states it fits 99% of frames, including box springs, platforms, foundations, and floors. Ensure your foundation supports a 12-inch hybrid without sagging. You will need a sturdy base to maintain the firm support core’s integrity. Plan for a 48- to 72-hour expansion period after unboxing. Keep the area clear for full recovery. This model targets back, stomach, and combination sleepers seeking firm alignment. If you prefer plush, sinking feels, other softer hybrids may suit you better. The breathable cover helps manage heat, but hot sleepers should still monitor their personal comfort levels. Pair this with a waterproof protector to maintain the fiberglass-free foam’s hygiene. Check that your bedroom doorways allow the rolled box to pass through. This spec-focused choice fits best in rooms where stability and motion isolation are priorities over plush cushioning.
Check before you buy
- Confirm your bed frame supports 12-inch hybrids without sagging.
- Ensure bedroom doorways fit the rolled box dimensions.
- Verify you prefer firm support for back or stomach sleep.
- Plan for 48-72 hours for full mattress expansion.
The product at a glance
REMIISS 12 Inch King Hybrid Mattress
Best for: back and stomach sleepers
- Size
- King
- Thickness
- 12 in
- Firmness
- Medium Firm
- Mattress Construction
- Hybrid
- Support Core
- 800+ pocket coils
- Comfort Layer
- High-density gel memory foam
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This 12-inch hybrid mattress uses 800+ individually wrapped pocket coils and high-density gel memory foam. It offers firm support for back, stomach, and combination sleepers. The 7-layer design reduces heat buildup and motion transfer. It fits standard bed frames and expands within 72 hours. You get stable spinal alignment and pressure relief without fiberglass.
Pros
- 800+ individually wrapped pocket coils for stable support
- Firm feel ideal for back and stomach sleepers
- High-density gel memory foam reduces heat buildup
- Fiberglass-free construction for safe sleep
- Fits 99% of bed frames including platforms
Cons
- Firm firmness may not suit side sleepers
- 48-72 hour expansion time required
- 50-pound weight makes handling difficult
Good fit if
- You sleep on your back or stomach
- You prefer a firm sleep surface
- You want a fiberglass-free mattress
Skip if
- You sleep primarily on your side
- You need immediate full expansion
- You prefer a soft or plush feel
Verdict: REMIISS King Hybrid Firm Mattress delivers stable support for back and stomach sleepers who need firm alignment. Its coil and foam build suits those who sleep hot or want a fiberglass-free option.
Specifications side by side
| Spec | REMIISS 12 Inch King Hybrid Mattress |
|---|---|
| Size | King |
| Thickness | 12 in |
| Firmness | Medium Firm |
| Mattress Construction | Hybrid |
| Support Core | 800+ pocket coils |
| Comfort Layer | High-density gel memory foam |
| Cover Material | Breathable cooling cover |
| Certification | Fiberglass-free |
| Special Features | 7-zone support, motion isolation |
| Intended Use | Back, stomach, combination sleepers |
| Dimensions | 80 × 76 × 12 inches |
| Weight | 50 pounds |
| Color | Black |
| Model | M-26-8 |
Frequently asked questions
Is the REMIISS King mattress good for back pain?
Yes, it is designed for back and stomach sleepers who need firm alignment. The hybrid construction uses high-density gel memory foam and over 800 individually wrapped pocket coils. This combination provides stable support to keep your spine in a neutral position while you sleep.
Does the REMIISS King mattress sleep cool?
It includes high-density gel memory foam, which often helps manage heat retention. The listing notes that the coil and foam build suits those who sleep hot. The airflow from the pocket coils may also assist in dissipating body heat throughout the night.
How thick is the REMIISS King mattress?
The mattress measures 12 inches in height. This substantial profile allows for easier entry and exit from the bed. It fits standard King bed frames and foundations, providing a comfortable elevation without being excessively tall for most bedrooms.
Is the REMIISS King mattress fiberglass-free?
The product description highlights it as a fiberglass-free option. This is a common safety feature in modern mattresses. You do not need to worry about fiberglass fibers escaping if the cover is damaged, as the manufacturer has excluded this material from the build.
What is the weight of the REMIISS King mattress?
The mattress weighs 50 pounds. This weight suggests a dense build, which contributes to its stability and support. You may need assistance moving it into position, but the density ensures it remains firm and does not sag easily over time.
Does the REMIISS King mattress come in a box?
Yes, it is sold as a bed in a box. The listing notes a smart roll-and-rise technology to aid in setup. You simply unroll the mattress and remove the packaging, allowing it to expand to its full 12-inch height before use.