Sweetnight CoolNest 16 inch King Mattress, Cooling Memory Foam Mattress

Price: $699.99
(as of Sep 22, 2026 10:29:38 UTC – Details)

Product description

1 Adaptive Cool All Night

2 5-Zone Ergo Support

1 CoolNest Foam Mattress

2 Mattress In a Box

1 Award Mattress

2 Certification

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Customer Reviews

4.4 out of 5 stars 10

4.4 out of 5 stars 1,149

4.4 out of 5 stars 1,149

4.4 out of 5 stars 1,149

Price

$879.99$879.99

$679.99$679.99

$549.99$549.99

$449.99$449.99

Thickness

12/14/16

12/14/16

10/12/14/16

10/12/14/16

Cover Fabric

Premium Cooling Ice Silk Cover

Cooling Ice Silk Cover

Knitted Cooling Nylon Cover

Knitted Cooling Nylon Cover

Cooling Level

Upgraded 5-Stage Cooling

Four-Stage Cooling

Triple-Stage Cooling

Triple-Stage Cooling

Temperature Regulation

PCMflux High Resilience Foam

PCMflux High Resilience Foam

PCMflux High Resilience Foam

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Heat Buildup Control

AirMesh Breathable Memory Foam

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Breathable Structure

Advanced 3D Ventilation Design

Upgraded 3D Air Circulation

Standard Breathable Structure

Standard Breathable Structure

Support

Refined 7-Zone Precise Support

7-Zone Ergonomic Support

5-Zone Ergonomic Support

5-Zone Ergonomic Support

CoolNest System for a Cooler Night – The CoolNest 16 inch king mattress features our innovative CoolNest System, combining PCM high-resilience foam with gel-infused memory foam for layered cooling comfort. This advanced system helps dissipate heat and maintain a cooler surface throughout the night, creating a cooler and more comfortable sleep environment for hot sleepers.
5-Zone Support for Pressure Relief – Engineered with a 5-zone design, this king size foam mattress integrates support foam and comfort foam to help cushion pressure areas from head to toe. It helps redistribute pressure while maintaining stability and balanced support for enhanced comfort. Recognized by the American Chiropractic Association (ACA), it’s designed to promote a more restful sleep experience.
Motion Isolation for Undisturbed Sleep – Constructed with multiple layers of memory foam, the CoolNest 16 inch cooling memory foam mattress helps absorb motion and reduce vibrations. Additionally, these layers work synergistically to minimize motion transfer, so you’re less likely to be disturbed whether your partner shifts positions or gets up during the night. Wake up feeling more refreshed.
Enhanced Breathability for Cooler Comfort – The CoolNest cover incorporates 3D-woven technology, featuring a ventilation pore design that improves breathability by 35% compared to standard fabrics. Also, the PCM high-resilience foam with a hollow structure promotes 3X airflow. Together, these features help to wick away moisture and adapt to body temperature for a cooler, drier sleep surface.
Restful Sleep & King Mattress in a Box – The Sweetnight CoolNest gel-infused memory foam mattress features CertiPUR-US certified foams and certified cover, which provides a comfortable sleep environment. The 16 inch memory foam king mattress is compressed in a box for easy setup. Additionally, it comes with a 10-year protection. Please allow the Sweetnight mattress to fully expand for 72 hours.
Customers find the mattress comfortable and appreciate its medium firm feel, with one noting it’s firm enough to keep their back aligned. Moreover, they report improved sleep quality, waking up without shoulder or back pain and falling asleep quickly. Additionally, the mattress receives positive feedback for its cooling properties, particularly in summer, and its support system, with one customer highlighting its 5-zone design that hits all pressure points. Customers consider it worth the price and appreciate that it feels like a more expensive mattress, while also noting it has no odor.