Sweetnight CoolNest® Memory Foam King Size Mattress 16 inch Cooling Mattresses in a Box,Scientific Support,Medium Soft
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Sweetnight CoolNest® Memory Foam King Size Mattress 16 inch Cooling Mattresses in a Box,Scientific Support,Medium Soft

968 ratings
Sweetnight CoolNest® Memory Foam King Size Mattress 16 inch Cooling Mattresses in a Box,Scientific Support,Medium SoftSweetnight CoolNest Memory Foam King Size Mattress 16 inch Cooling Mattresses in a Box Scientific Support Medium SoftSweetnight CoolNest Memory Foam Queen Size Mattress 14 inch Cooling Mattresses in a Box Scientific Support Medium SoftSweetnight CoolNest 12 inch Queen Medium Gel Memory Foam Mattress AdultSweetnight CoolNest 16 inch Queen Medium Gel Memory Foam Mattress AdultSweetnight 13 inch Queen Size Mattress Cooling Gel Memory Foam Mattresses in a Box CertiPUR US Certified MediumSweetnight 13 inch King Size Mattress Cooling Gel Memory Foam Mattresses in a Box CertiPUR US Certified MediumSweetnight CoolNest Memory Foam King Size Mattress 12 inch Cooling Mattresses in a Box Scientific Support Medium SoftSweetnight CoolNest Memory Foam King Size Mattress 14 inch Cooling Mattresses in a Box Scientific Support Medium SoftSweetnight CoolNest Memory Foam Full Size Mattress 12 inch Cooling Mattresses in a Box Scientific Support Medium SoftSweetnight CoolNest Memory Foam Full Size Mattress 14 inch Cooling Mattresses in a Box Scientific Support Medium Soft
Bed SizeKing
Mattress Thickness16 in

Key item features

  • Cooling Technology: Features an advanced CoolNest cover with cool-to-the-touch fabric and 35% more breathability, along with PCMFLUX High Resilience Foam for 3X better breathability, designed to keep sleepers up to 8 degrees cooler.
  • Scientific Support: Incorporates PCMFLUX foam that absorbs body heat and is CertiPUR-US certified, preventing overheating for a comfortable sleep experience.
  • Ergonomic Design: Offers 5-zone ergo support with 9 comfort bars and supportive foam, enhancing spine alignment and reducing pressure points, particularly beneficial for back pain sufferers.
  • Firmness Level: Provides a medium soft firmness, balancing cooling airflow with body support, ideal for hot sleepers and those experiencing restless nights or sleep disorders.
  • Targeted Users: Specifically designed for hot sleepers to stop night sweats, heavier individuals to prevent sinking, and back pain sufferers for spinal alignment.
  • Mattress Dimensions: King size mattress with a 16-inch profile, delivered conveniently in a box.
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Specs

Bed size, KingMattress comfort level, MediumMattress type, Memory Foam MattressesMattress thickness, 16 inBrand, SweetNightMaterial, CoolNest™ Cover, Gel-infused Memory Foam, PCMflux™ High Resilience Foam

About this item

Product details

SweetNight CoolNest™ Memory Foam Mattresses - The Cooling & Support for Deep Sleep Experience the perfect blend of luxury and technology with SweetNight's premium Memory Foam Mattresses. Featuring a sophisticated deep gray and blue design, this mattress combines cutting-edge cooling technology with superior support for your most comfortable sleep ever.
  • ALL-NIGHT COOLING TECHNOLOGY FOR HOT SLEEPERS： Sleep Up to 8° COOLER – Advanced COOLNEST™ Cover with Cool-to-the-Touch fabric & 35% more breathability (OEKO-TEX® certified) wicks heat and sweat for uninterrupted cool sleep.
  • SCIENTIFIC COOLING SUPPORT WITH PCMFLUX™ FOAM:3X Better Breathability – PCMFLUX™ High Resilience Foam absorbs body heat while you fall asleep, preventing overheating with CertiPUR-US® certified cooling comfort.
  • 5-ZONE ERGO SUPPORT FOR PAIN RELIEF & BALANCE: Enhanced Spine Alignment – 5-zone ergonomic design with 9 comfort bars and supportive foam reduces pressure points, ideal for back pain sufferers and heavier individuals.
  • IDEAL FOR HOT SLEEPERS & RESTLESS NIGHTS:Stops Night Sweats & Hot Flashes – Medium firmness balances cooling airflow and body support, perfect for those with sleep disorders or overheating issues.
  • WHO NEEDS THIS MATTRESS?
  • ✔ Hot Sleepers – Stops night sweats & overheating
  • ✔ Heavier Individuals – Prevents body "sinking" with reinforced support
  • ✔ Back Pain Sufferers – Aligns the spine for pain-free mornings
  • ✔ Sleep Disorder Relief – Promotes longer, deeper sleep cycles
info:
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Specifications

Bed size

King

Mattress comfort level

Medium

Mattress type

Memory Foam Mattresses

Mattress thickness

16 in

Warranty

Warranty information

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Customer ratings & reviews

4.6 out of 5 stars
stars
968 ratings497 reviews
Includes global ratings and reviews
How item rating is calculated
  1. 5 stars79% (763)
  2. 4 stars14% (139)
  3. 3 stars2% (19)
  4. 2 stars1% (13)
  5. 1 star4% (34)

Reviews summary

Pros

  • : Provides adequate support and pressure relief.
  • : Offers great quality at a lower cost.
  • : Provides a restful experience.
  • : Reduces back, hip, and joint pain.
  • : Offers a balance of support and comfort.

Neutral

  • : Can be smooth and plush, but may have wrinkles or ripples.
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Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
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Showing 1-3 of 497 reviews

Oct 21, 2026
Reviewer name: ALVARO
Item details
Bed size: Queen
Mattress thickness: 14 in
Sold bySweet Night Technology Inc.Delivered byWalmart
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Recommend!

I recommend this mattress. I have been using for ten days, it feels great. I am also satisfied with the overall purchase experience. It arrived the following day, and FedEx left it outside my apt door on a third floor.

Helpful?3PX0ZW7H04CY16016258569
Oct 24, 2026
Reviewer name: damon
Item details
Bed size: King
Mattress thickness: 13 in
Sold and shipped bySweet Night Technology Inc.
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Bed is very comfortable and price was very reasonable

Helpful?3PX0ZW7H04CY16016258569
Sep 23, 2026
Reviewer name: AshleyA
5 out of 5 stars
5 out of 5 stars review

Seller Verified Purchase

Comfortable- no more back pain

One of the most comfortable mattresses! We have one for us and bought this one for our daughter because she loves ours so much! She sleeps so much better and does not wake up with back pain anymore. Highly recommend!

Review from sweetnight.com
Helpful?3PX0ZW7H04CY16016258569
Current price is Now $699.99
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was $1,049.99
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4.3 stars out of 5, based on 1265 seller reviews(4.3)
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