Sweetnight CoolNest vs Layla: Which Memory Foam Wins?

Two memory foam mattresses, two very different ways of handling heat and pressure relief. The Sweetnight CoolNest builds its identity around a cooling system the brand says feels up to 8 degrees cooler, while the Layla Memory Foam Mattress leans on a flippable design with a copper-infused foam on both sides. Both are all-foam builds aimed at sleepers who want contouring without coils, and both come with a trial period long enough to decide at home. This face-to-face walks through feel, materials, cooling, trial terms and warranty, then names which one fits which sleeper.

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Which mattress should you choose between Sweetnight CoolNest and Layla?

The Sweetnight CoolNest suits hot sleepers who want a fixed, cooling-focused memory foam build with a zoned support layer. The Layla Memory Foam Mattress suits sleepers who cannot decide on firmness, because it is flippable with a soft side and a firm side. Both are all-foam mattresses with a trial period, and the choice comes down to whether you value a dedicated cooling system or a two-sided firmness design.

The Sweetnight CoolNest is sold in three thicknesses, 12 inches, 14 inches and 16 inches. The Layla Memory Foam Mattress is a single 10.5 inch build across all sizes. That height difference matters for anyone with a fitted sheet set already bought or a bed frame with limited clearance.

How do the two mattresses feel and support you?

The CoolNest uses a 5-zone support foam with 9 comfort bars, which the brand describes as full-body pressure relief. Above that sit a transition comfort foam, a gel-infused memory foam and an ocean memory foam, topped by a PCMflux high-resilience foam and a 3D weaving CoolNest cover. The result is a layered all-foam feel built around contouring and zoned support rather than a single uniform slab.

The Layla takes a different route. Its flippable firmness design means one side is soft and the other is firm, and the brand describes the overall feel as soft yet supportive. Copper-infused high-resilience memory foam sits on both the top and bottom sides, so whichever side faces up, you are sleeping on that copper foam. The brand calls this layering the source of its special feel.

For a sleeper who shares a bed, the Layla states that movement stays contained where it starts, quietly cushioning every shift. That motion isolation claim is specific to the Layla; the CoolNest page does not address motion transfer in the same way.

Side-by-side: Sweetnight CoolNest vs Layla Memory Foam

Which one keeps you cooler at night?

Cooling is where the two mattresses state their cases most clearly. The Sweetnight CoolNest says its CoolNest system feels up to 8 degrees cooler, with the CoolNest cover and PCMflux high-resilience foam working together for all-night cooling. The brand also points to a 3D airflow structure design as part of the breathable comfort stack, and it positions the mattress as the best solution for hot sleepers.

The Layla approaches temperature through copper and airflow. Its HR3COPPER foam uses copper-gel microbeads that the brand says compress together to transfer body heat away from the body. Under that, a zoned transition layer with deep channeling acts as the primary conduit for airflow, and the brand argues that circulating air lets the other cooling elements do their jobs better. Both mattresses name cooling as a priority, but they arrive there through different materials.

If cooling is your main concern, our best cooling mattresses roundup covers more options in this category.

What materials and certifications does each mattress use?

Sweetnight states that all its foam is certified by CertiPUR-US and that the CoolNest fabric passes the STANDARD 100 by OEKO-TEX. The layer list runs from the 3D weaving CoolNest cover down through PCMflux high-resilience foam, gel-infused memory foam, ocean memory foam, transition comfort foam and the 5-zone support foam with 9 comfort bars.

Layla focuses its materials story on foam density. The brand states that its Layla High-Resilience Copper Memory Foam has a 3.5lb density, which it contrasts with the 2 to 3lb density it attributes to average memory foam mattresses. Beyond density, the brand lists three benefits of its copper infusion: enhanced cooling, variable support that adapts to pressure, and antimicrobial protection at the surface.

Both brands publish certification or material detail on their product pages, so you can compare the foam stacks directly rather than relying on vague comfort language.

Who should buy the Sweetnight CoolNest?

The CoolNest is the pick for a hot sleeper who wants a memory foam mattress built specifically around cooling. The brand names hot sleepers as the target audience and backs it with the CoolNest cover, PCMflux foam and 3D airflow structure. It also suits anyone who prefers a taller mattress, since the 14 inch and 16 inch options give more surface depth than a standard 10.5 inch foam bed. The 100-night trial gives you just over three months to confirm the cooling claim holds in your bedroom.

It is also the more budget-conscious entry of the two based on the prices listed on the product pages, though you should compare the exact size you need before deciding. Side sleepers who want pressure-point contouring may also find the 5-zone support design appealing, since the brand describes it as full-body pressure relief.

Shoppers comparing foam options in general may want to browse our best memory foam mattresses selection for the wider field.

Who should buy the Layla Memory Foam Mattress?

The Layla is the pick for a sleeper who is unsure about firmness and wants the option to change without buying a new mattress. Flipping it gives you a soft side and a firm side, which is a genuine hedge against getting the feel wrong. It also suits couples, since the brand explicitly addresses motion isolation and says movement stays contained where it starts. The 120 night trial is 20 nights longer than the CoolNest trial, which gives a couple more time to test the mattress together.

The copper-infused foam story will appeal to anyone who wants antimicrobial protection and temperature regulation described in concrete material terms rather than cover-level claims. At 10.5 inches, it also fits more easily under adjustable frames or in rooms where a tall mattress feels imposing.

Couples weighing motion transfer against cooling may also find our best mattresses for couples roundup useful.

What do trial, warranty and shipping look like?

Sweetnight offers a 100-night trial, free U.S. shipping and a 10-year warranty. In-stock orders ship in 1 to 2 business days. Layla offers free shipping, free returns and a 120 night trial; the product page also shows a review count of 8652 reviews alongside the mattress.

The trial difference is modest but real: 120 nights versus 100 nights. If you sleep hot or change positions frequently, the extra 20 nights may matter more than it sounds on paper, because foam mattresses sometimes need a few weeks before the feel settles.

Is one mattress better value than the other?

Value here is about what you get for the money rather than a simple price gap. The Layla is listed at $999 and gives you two firmness feels in one mattress, which effectively doubles the feels you can test. The Sweetnight CoolNest is priced by size and thickness on its product page, and it comes in three thickness tiers so you can match the build to how much cushioning you want.

The Layla page also notes a promotional offer of an additional 10 percent off the sale price of certain items when purchased with a mattress, which can change the effective total. Sweetnight runs its own seasonal promotions, so check current pricing on both sites before committing. Neither brand’s price should be treated as fixed day to day.

For a broader look at foam pricing across brands, our best hybrid mattresses page also covers foam-and-coil options at various budgets.

Which mattress is the better buy overall?

The Sweetnight CoolNest wins this face-to-face for hot sleepers who want a cooling-first memory foam mattress with zoned support and a taller profile. Its cooling system, 5-zone design and three thickness options give a hot sleeper more specific tools than a single-height build. The Layla Memory Foam Mattress wins for the sleeper who values firmness choice and motion isolation above all else, because its flippable design and copper-infused foam on both sides solve a different problem.

Neither mattress is a bad buy. The CoolNest is the better fit if heat is your main complaint and you want the mattress built around that. The Layla is the better fit if you are unsure about firmness or share a bed and want movement contained. Pick the CoolNest if you sleep hot, pick the Layla if you want two feels in one mattress.

World Sleep Almanac score: 7.6/10 for the Sweetnight CoolNest. The score is an editorial rating based on these criteria: cooling approach and stated performance, materials and certifications, trial length and warranty, price transparency at listed sizes, and clarity of the support design.

Frequently asked questions

Does the Sweetnight CoolNest really sleep cooler than regular memory foam?

Sweetnight states that its CoolNest system feels up to 8 degrees cooler, using the CoolNest cover together with PCMflux high-resilience foam. The brand also describes a 3D airflow structure design as part of the breathable comfort stack. How much of that you feel depends on your room temperature and bedding, so the 100-night trial is the place to confirm it.

Can I flip the Layla Memory Foam Mattress to change its firmness?

Yes. The Layla is built with a flippable firmness design, soft on one side and firm on the other. Copper-infused memory foam sits on both the top and bottom sides, so you get that material whichever side is up. This is the mattress’s defining feature and the main reason to choose it over a single-sided foam bed.

Which mattress has a longer trial period?

The Layla Memory Foam Mattress offers a 120 night trial, while the Sweetnight CoolNest offers a 100-night trial. Both are long enough to test the mattress through several sleep cycles, but the Layla gives you 20 extra nights. If you are a couple testing motion isolation together, that extra time can be useful.

Do either of these mattresses come with coils?

No. Both the Sweetnight CoolNest and the Layla Memory Foam Mattress are all-foam builds. If you want coils, the Saatva Classic uses a dual-coil design with over 1,000 recycled carbon steel coils in full size and up, and it comes in three comfort levels. That is a different feel entirely from either foam mattress here.

How do I choose between the three CoolNest thicknesses?

Sweetnight offers the CoolNest in 12 inch, 14 inch and 16 inch thicknesses. The brand labels the 12 inch as essential cooling, the 14 inch as enhanced cooling and the 16 inch as ultimate cooling and support. Thicker builds give more layered cushioning, so heavier sleepers or anyone who wants a deeper hug from the foam may prefer the taller options.

Is either mattress good for back sleepers?

The Sweetnight CoolNest uses a 5-zone support foam with 9 comfort bars, which the brand describes as full-body pressure relief and ergonomic support. The Layla offers a firm side that may suit back sleepers who want more pushback. Both approaches can work for back sleeping, so the trial period is the best way to confirm which one suits your spine.

Reviewed by the World Sleep Almanac editorial team. Updated for 2026.