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The SweetNight CoolNest® Memory Foam Mattress is the best cooling mattress for hot sleepers, with independent testing proving it sleeps 8 degrees Celsius cooler than traditional memory foam. The triple-layer CoolNest® System (10,000+ micro-vents + PCM technology + gel foam) provides all-night temperature regulation. At $499 for Queen, it's also the best cooling mattress under $500.

The 8°C temperature drop comes from three cooling technologies working together: (1) CoolNest® 3D Cover with 10,000+ micro-vents increases airflow by 35%, (2) PCMflux® Foam with NASA-inspired phase-change materials that absorb and release heat, (3) Gel-Infused Memory Foam that continuously disperses body heat. This makes it the best mattress with PCM technology under $600.

Yes, the CoolNest® Memory Foam Mattress is ACA-endorsed (American Chiropractic Association) and designed to support proper spinal alignment. Its 5-zone support system with 9 comfort bars targets pressure points from head to toe. In customer surveys, 78% reported reduced back discomfort. With a medium-firm feel (6.5 out of 10), it’s well suited for back and side sleepers.

Priced at $499 for a queen size (compared to $2,000–$5,000 for many luxury brands), the CoolNest® Memory Foam Mattress delivers advanced cooling performance at a fraction of the price. You get PCM technology, gel-infused foam, ACA endorsement, and a 4.8 out of 5-star rating. It’s one of the best-value cooling mattresses available today.

Yes. The CoolNest® Mattress is designed with couples in mind:

(1) High motion isolation helps minimize partner movement disturbance.

(2) Advanced cooling technology reduces heat buildup.

(3) 5-zone support adapts to different body types;

(4) A queen-size provides approximately 30 inches of space per person, while a king offers about 38 inches each.

It’s rated 4.8 out of 5 stars by customers.

Medium at 6.5 out of 10 on the firmness scale. This is the "Goldilocks" firmness recommended by sleep experts: soft enough for side sleepers (pressure relief at shoulders/hips), firm enough for back sleepers (spinal support), and balanced for combination sleepers. It's the best cooling mattress for side sleepers who also need back support.

Yes, completely risk-free. Sleep on the CoolNest® for 100 nights (over 3 months). If not satisfied, contact us for free pickup and full refund. We recommend at least 30 nights for your body to adjust to the new support system. We also donate returned mattresses to local charities. The mattress includes a 10-year warranty covering sagging >1.5 inches.

The CoolNest® holds three major certifications:

(1) CertiPUR-US® — all foams are free from harmful chemicals, ozone depleters, and heavy metals;

(2) OEKO-TEX® STANDARD 100 — the cover fabric is tested for skin safety;

(3) ACA-endorsed — recognized by the American Chiropractic Association.

Together, these certifications demonstrate its commitment to safety, quality, and cooling performance.

Both mattresses use PCM technology and achieve 8°C cooling. However, the Tempur-Pedic Breeze costs $4,999 vs. CoolNest® at $469.99— that's 10X the price for the same cooling performance. Both have 10-year warranties and 100-night trials. The CoolNest® adds ACA endorsement for back pain, which Tempur doesn't have. This is why it's the best value cooling mattress. 

The CoolNest® Memory Foam Mattress is ideal for:

• Hot sleepers (designed to sleep up to 8°C cooler)

• Back pain sufferers (ACA-endorsed with 5-zone support)

• Side sleepers (targeted pressure relief)

• Couples (advanced motion isolation)

• Value-conscious buyers (accessible pricing under $500)

• Those who experience night sweats (moisture-wicking design)

• Allergy-conscious sleepers (CertiPUR-US® certified materials)

Its versatile design makes it a strong choice in the cooling mattress category.