Best Sleep On Latex King Mattresses: 2 Spec-Based Picks
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Finding the best sleep on latex king mattresses requires looking at published specifications rather than marketing claims. We compared 2 options from Sleep On Latex to help you choose. The top pick, the Sleep On Latex Pure Green King Latex Mattress, leads because its 8.5-inch height and medium firmness provide ideal support for side sleepers. These selections are based strictly on the data listed on each product page. This guide helps you decide which mattress construction and firmness level match your specific sleep needs.
Quick picks
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | Sleep On Latex Pure Green King Latex Mattress Best overall | side sleepers wanting organic latex | Check price of Sleep On Latex Pure Green King Latex Mattress on Amazon |
| 2 | Sleep On Latex Pure Green Firm King Mattress Best budget | Sleepers seeking firm organic support | Check price of Sleep On Latex Pure Green Firm King Mattress on Amazon |
The best fit for you
- You want the best overall organic latex mattress Sleep On Latex Pure Green King Latex Mattress This model provides medium support with certified organic materials.
- You need firm support to avoid sinking Sleep On Latex Pure Green Firm King Mattress The dense latex construction offers a firm surface for back support.
- You prefer a lighter mattress for easier handling Sleep On Latex Pure Green King Latex Mattress It weighs 150 pounds, which is lighter than the firm version.
Our 2 picks
Sleep On Latex Pure Green King Latex Mattress
Best for: side sleepers wanting organic latex
- Size
- King (what this guide is about)
- Thickness
- 8.5 in
- Firmness
- Medium
- Mattress Construction
- Organic latex foam
- Support Core
- 8 in organic latex foam
- Comfort Layer
- Organic latex foam
View on Amazon: Sleep On Latex Pure Green King Latex Mattress Affiliate link
This Sleep On Latex king mattress uses 8 inches of GOLS certified organic latex foam for support. It sits 8.5 inches tall with a quilted cover of organic cotton and wool. The medium firmness suits side and back sleepers. It ships compressed from a Chicago factory. You get a GOTS certified organic product without assembly.
Pros
- 8 inches of GOLS certified organic latex foam
- Quilted cover made of organic cotton and wool
- GOTS and Fair Trade certified materials
- Medium firmness for side and back sleepers
- No assembly required
Cons
- Heavier at 150 pounds
- No adjustable firmness settings
- No smart features or app control
Good fit if
- You want a fully organic latex mattress
- You prefer medium firmness for side sleeping
- You want no assembly hassle
Skip if
- You need adjustable firmness levels
- You want a lightweight mattress under 100 pounds
- You prefer synthetic foam over latex
Verdict: Sleep On Latex Organic Latex King Mattress delivers certified organic materials and medium support for side sleepers who value natural materials and easy setup.
Sleep On Latex Pure Green Firm King Mattress
Best for: Sleepers seeking firm organic support
- Size
- King (what this guide is about)
- Thickness
- 8.5 in
- Firmness
- Firm
- Mattress Construction
- Organic latex foam
- Support Core
- 8 in organic latex foam
- Comfort Layer
- Organic latex foam
View on Amazon: Sleep On Latex Pure Green Firm King Mattress Affiliate link
This firm latex mattress offers strong support with an 8-inch organic latex core and an 8.5-inch total profile. The quilted cover combines organic cotton and wool for breathability. It is designed for sleepers who prefer a solid, supportive surface that alleviates pressure points without excessive sink. The construction is certified organic and fair trade, assembled in Chicago.
Pros
- 8-inch organic latex foam support core
- Quilted cover of organic cotton and wool
- GOLS and GOTS certified organic materials
- Firm feel for strong support
- No assembly required
Cons
- Heavy at 195 pounds
- Single firmness option
- No smart features or app control
Good fit if
- You prefer a firm sleeping surface
- You want organic, certified materials
- You need strong spinal support
Skip if
- You prefer a plush, soft feel
- You want adjustable firmness settings
- You need a lightweight mattress
Verdict: Sleep On Latex Firm King delivers a dense, supportive sleep surface for those who dislike sinking. It suits buyers seeking durable, organic materials in a straightforward, no-nonsense design.
Specifications side by side
| Spec | Sleep On Latex Pure Green King Latex Mattress | Sleep On Latex Pure Green Firm King Mattress |
|---|---|---|
| Size | King | King |
| Thickness | 8.5 in | 8.5 in |
| Firmness | Medium | Firm |
| Mattress Construction | Organic latex foam | Organic latex foam |
| Support Core | 8 in organic latex foam | 8 in organic latex foam |
| Comfort Layer | Organic latex foam | Organic latex foam |
| Cover Material | Quilted organic cotton and organic wool | Quilted organic cotton and organic wool |
| Intended Use | Side sleepers, back sleepers and couples | not stated |
| Dimensions | 80 × 76 × 8.5 inches | 80 × 76 × 8.5 inches |
| Weight | 150 pounds | 195 pounds |
| Color | Natural | Natural |
| Model | PGMT9M | PGMK9F |
How to choose the right king latex mattress
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Check firmness level
Firmness determines how your body sinks into the bed. The Pure Green King offers medium support, which works well for side sleepers who need pressure relief on shoulders and hips. The Pure Green Firm King provides a dense, supportive surface for those who dislike sinking. You should match the firmness rating to your primary sleeping position. Side sleepers often prefer medium, while back or stomach sleepers may need firm support for proper spinal alignment. Choose the rating that keeps your spine neutral.
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Review mattress height
Both models share an 8.5-inch height, which is a standard profile for latex mattresses. This thickness allows for adequate contouring without excessive sinkage. You should check if this height fits your existing bed frame and sheets. An 8.5-inch profile is generally compatible with most standard king-size frames. It also provides enough depth for the latex layers to function effectively. If you have deep-pocket sheets, this height will fit easily. Consistent height across models simplifies your choice when comparing other specs like firmness.
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Consider mattress weight
Weight indicates the density and material volume of the mattress. The Pure Green King weighs 150 pounds, making it lighter and easier to move or rotate. The Pure Green Firm King weighs 195 pounds due to its denser construction. You should consider your physical ability to handle the mattress during setup or rotation. Heavier models may require assistance. Lighter models are more manageable for single-person tasks. Weight also correlates with durability and material quality in latex beds. Choose based on your handling needs and desired density.
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Verify material construction
Both mattresses use latex construction, which offers durability and natural breathability. Latex is known for its responsive feel and long lifespan compared to other foams. You should confirm that the latex is organic if that is a priority. The Pure Green King highlights certified organic materials, appealing to those seeking natural sleep surfaces. Latex construction also provides consistent support without the heat retention common in memory foam. Check the material type to ensure it aligns with your preferences for natural, eco-friendly bedding options.
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Match to sleep position
Your primary sleep position dictates the ideal support level. Side sleepers benefit from the medium support of the Pure Green King, which cushions pressure points. The firm model suits those who need a solid surface to prevent sagging. You should identify whether you sleep on your side, back, or stomach. Side sleepers often require softer surfaces to align the spine. Back and stomach sleepers typically need firmer support. Select the model that best accommodates your body's needs during your most common sleeping posture.
Frequently asked questions
How heavy is the Sleep On Latex Pure Green King Latex Mattress?
The Pure Green King Latex Mattress weighs 150 pounds. This weight reflects its all-latex construction and 8.5-inch profile. You will need assistance to move it into place. The heavier Pure Green Firm King model weighs 195 pounds due to its denser foam layers.
What is the thickness of these king latex mattresses?
Both the Pure Green King and Pure Green Firm King measure 8.5 inches in height. This consistent thickness provides a substantial feel without being overly tall for standard sheets. The uniform profile ensures compatibility with most king-size bed frames and foundations.
Does the Sleep On Latex Pure Green King come in other colors?
The available data lists the color as Natural for both models. You will receive a mattress with the inherent look of organic latex. This natural finish aligns with the brand's focus on organic materials and straightforward design without added dyes or treatments.
Which Sleep On Latex king mattress is better for side sleepers?
The Pure Green King Latex Mattress is the better choice for side sleepers. It offers medium support, which helps relieve pressure on your shoulders and hips. The softer feel allows your body to sink slightly, promoting proper spinal alignment while you sleep on your side.
What is the model number for the firm Sleep On Latex king mattress?
The model number for the firm option is PGMK9F. This identifier helps you verify you are ordering the correct firmness level. It distinguishes the dense, supportive Pure Green Firm King from the medium support Pure Green King, which carries the model number PGMT9M.
Are these mattresses made with organic materials?
Yes, both models feature certified organic materials. The Pure Green King is highlighted for its organic latex construction. This means the materials meet specific standards for organic content. You get a sleep surface derived from natural sources rather than synthetic foams or chemical treatments.
How wide is a king size mattress from Sleep On Latex?
A king size mattress from this brand measures 76 inches in width. This standard width provides ample space for two sleepers. Combined with an 80-inch length, it offers a generous sleeping area that fits most master bedrooms and standard king-size bedding sets.