Sweetnight CoolNest King Size Mattress 16 inch Cooling Gel Memory Foam Mattresses in a Box,CertiPUR-US Certified,Medium Firm

Up to 8°F Cooler All Night with CoolNest™ Tech

The OEKO-TEX certified cool-to-the-touch cover boosts breathability by 35%, while gel-infused foam actively wicks heat and sweat to keep hot sleepers cool and dry all night long.

PCMflux™ Foam for 3X Better Breathability & Overheating Prevention

CertiPUR-US certified PCMflux high-resilience foam absorbs excess body heat as you sleep, eliminating night sweats and ensuring consistent cool comfort from bedtime to morning.

5-Zone Ergo Support for Spine Alignment & Pain Relief

Endorsed by the American Chiropractic Association, the 5-zone design with 9 comfort bars targets pressure points, supporting the spine and reducing pain for back sleepers and heavier individuals.

Medium Firm Feel Balances Cooling Airflow & Stable Support

A balanced medium-firm feel delivers just-right support to prevent sinking, while optimized airflow keeps you cool—ideal for restless sleepers prone to overheating.

Certified Safe & Durable for Long-Lasting Healthy Sleep

Backed by CertiPUR-US, OEKO-TEX, and ISPA certifications, plus a 10-year warranty, this mattress offers safe, non-toxic, and reliable comfort you can trust.