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

Key item features

  • 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.

Current price is $699.99
Price when purchased online
  • Free shipping
  • Free 30-day returns
Walmart Accident Plan by Allstate
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Arrives between Jun 8 - Jun 10
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Sold and shipped by Sweet Night Technology Inc.
4.256118881118881 stars out of 5, based on 1145 seller reviews(4.3)
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4.7 out of 5 stars
stars822 ratings459 reviews
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Showing 1-3 of 459 reviews

May 15, 2026
Chris V.
5 out of 5 stars review

Seller Verified Purchase

Easy on the wallet and back

Easy on the wallet and back. I've slept in these for over a year now. Just got my second for a spare bedroom. These truly are amazing. I was a Casper fan for years, but then switched to these. Never going back. Broke 3 vertebra in my back years ago and am sensitive to mattresses. The 12” thick bliss is just incredible. Perfect combination of support and comfort and heat dissipation.

Review from sweetnight.com
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Apr 26, 2026
Juan G.
5 out of 5 stars review

Seller Verified Purchase

Matress 10 inch

Its great and low price compared to others I would like it more firm do i love a very firm mattress (my preference) but this one is not too far. Thanks, you guys are awesome 💪🏽🗿😊

Review from sweetnight.com
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Dec 18, 2025
MeganEllis194
5 out of 5 stars review

Seller Verified Purchase

We have three of these mattresses and LOVE!

We first ordered this mattress for our guest bedroom and absolutely fell in love with the mattress. After my husband and I both taking turns sleeping in the guest bedroom (and realizing we sleep incredibly well) we ordered the same one for our master bedroom. Shortly after, we upgraded our daughter's bed and knew we had to get the same mattress. You'll sleep amazing!!

Review from sweetnight.com
Helpful?4C2TSSF1FG6U20224107580