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Sweetnight CoolNest 14 Inch California King Mattress, Cooling Memory Foam Mattress for Cool Night Sleep, 5-Zone Ergo Support for Pressure Relief, Medium, CertiPUR-US Certified

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Availability: In Stock.
Fulfilled by Amazon

Arrives Tuesday, Nov 11
Order within 9 hours and 34 minutes
Available payment plans shown during checkout

Color: Grey & Blue


Size: California King


Style: 14 Inch


Features

  • CoolNest System for a Cooler Night - The CoolNest 14 inch cal king mattress features our innovative CoolNest System, combining PCMflux high-resilience foam with gel-infused memory foam to deliver a dual cooling technology. This advanced system helps actively regulate temperature throughout the night, reducing overheating and night sweats for hot sleepers.
  • 5-Zone Ergo Support for Pressure Relief - Engineered with a 5-zone design, this gel memory foam mattress integrates support foam and comfort bars to target pressure points from head to toe. It helps redistribute pressure while maintaining stability, promoting proper spinal alignment and back pain relief. Endorsed by the American Chiropractic Association (ACA), it's designed for restorative sleep.
  • Motion Isolation for Undisturbed Sleep - Constructed with multiple layers of memory foam, the CoolNest cali king mattress has the advantage of foam on absorbing noise and vibrations. Additionaly, 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 Ultimate Comfort - The CoolNest cover incorporates 3D-woven technology, featuring an ventilation pores design that improving breathability by 35% compared to standard fabrics. Also, the PCMflux high-resilience foam with hollow structure promotes 3X airflow. Thereby these help to wick away moisture and adapt to body temperature for a cooler, drier sleep surface.
  • Healthy Sleep & Cal King Mattress in a Box - The Sweetnight CoolNest gel memory foam mattress features CertiPUR-US certified foams and OEKO-TEX certified cover, which provides a safer and healthier sleep environment. The 14 inch california king cooling 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.

Description

Sweetnight is a mattress and sleep solutions company that provides premium products to ensure a great night's sleep. We are committed to maximizing sleep comfort so you can relax and feel rejuvenated the next day. Our products are made with quality materials, with CertiPUR-US certification, and are all fiberglass free. Try our range of memory foam and hybrid mattresses today! The CoolNest Mattress incorporates the innovative CoolNest System, combinating PCM and gel memory foam. Effectively reducing overheating and night sweats. The 5-zone design integrates support foam and comfort bars, which offers a great combination of support and pressure relief, giving you a balace of support and comfort. What is in the box? 1x Sweetnight CoolNest Memory Foam Mattress 1x Sweetnight Opener 1x Manual & Warranty Card Note: - Please allow 48-72 hours for your mattress to regain its full shape. The rate of expansion is related to the temperature of the room. Most memory foam mattresses will expand faster in a warm room and will take longer in colder temperatures. - It's normal that there is an odor after unpacking the mattress. Place the mattress in a ventilated space for a few days and the smell will gradually disappear.

Brand: Sweetnight


Size: California King


Product Dimensions: 84"L x 72"W x 14"Th


Top Style: Tight Top


Cover Material: Polyester


Number of Layers: 6


Fill Material: Gel Memory Foam, High Density Foam, Memory Foam


Special Feature: Breathable, Low Motion Transfer, Pressure Relief, Temperature Regulating


Color: Grey & Blue


Model Name: SN-M01518


Item Weight: ‎73.1 pounds


Product Dimensions: ‎84 x 72 x 14 inches


Item model number: ‎SN14CLKGYMMPRO23N1


Date First Available: September 11, 2025


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Nov 11

Yes, absolutely! You may return this product for a full refund within 100 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Excellent Mattress – Cool, Supportive, and Super Comfortable
Color: Grey & Blue Size: Queen (U.S. Standard) Style: 14 Inch
I am so impressed with this mattress! The installation was quick and easy, and it expanded perfectly after unboxing. The cooling feature really makes a difference — no more waking up hot at night. The 14-inch thickness provides amazing comfort, and the 5-zone support truly helps relieve pressure on my back and shoulders. It feels both soft and supportive at the same time. I’ve been sleeping so much better since switching to this mattress. Highly recommend to anyone looking for quality, comfort, and a restful night’s sleep! ... show more
Reviewed in the United States on September 10, 2025 by Glen Glen

  • It’s worth every penny!!!
Color: Grey & Blue Size: Queen (U.S. Standard) Style: 14 Inch
Two layers of comfortable foam ensure you wake up without any pain. I've been searching for a mattress that actually keeps me cool at night, and this one truly delivers. The cooling technology works amazingly well - no more waking up sweaty or tossing and turning trying to find the "cool side" of the pillow. It's supportive without being too firm, and I wake up feeling refreshed instead of stiff. The quality is impressive, with a premium feel that you notice right away. Even after weeks of use, it still feels brand new. If you're a hot sleeper or just want a more comfortable night's rest, l can't recommend this mattress enough. It's worth every penny! ... show more
Reviewed in the United States on September 8, 2025 by Red Fox Red Fox

  • Cool, Supportive, and Worth Every Inch
Color: Grey & Blue Size: King (U.S. Standard) Style: 14 Inch
From the moment it was unboxed, this mattress impressed me. I let it expand fully for the recommended time, and it fluffed up beautifully. The cooling gel layer actually works—I no longer wake up feeling overheated, even on warmer nights. The 5-zone support is a game changer, cradling the shoulders and hips while keeping the back aligned, which makes a big difference in how refreshed I feel in the morning. The medium firmness strikes that perfect balance between soft comfort and sturdy support. It feels well-made, with no sagging or odd lumps after nights of use. If you want a king-size bed that feels luxurious without a luxury price tag, this one delivers both comfort and quality in every inch. ... show more
Reviewed in the United States on August 12, 2025 by Angie Sutil

  • Great support
Color: Grey & Blue Size: Queen (U.S. Standard) Style: 14 Inch
I am so glad I chose this queen foam mattress! From the very first night, I could feel such a difference in the way I slept. It has the perfect balance of softness and support my back and shoulders don’t ache anymore when I wake up. I used to toss and turn all night, but now I fall asleep quickly and stay asleep. The mattress doesn’t trap heat, which was a big concern for me, and it feels super comfortable whether I’m sleeping on my side or back. The quality is amazing for the price, and setup was so easy. If you’re looking for a mattress that gives you restful, comfortable sleep, I highly recommend this one! ... show more
Reviewed in the United States on September 5, 2025 by Elton Elton

  • Great Balance of Comfort and Support
Color: Grey & Blue Size: Queen (U.S. Standard) Style: 14 Inch
This mattress is amazing! It’s thick, supportive, and still feels soft and comfortable to sleep on. The cooling feature really makes a difference — I usually get hot at night, but now I sleep much cooler and don’t wake up sweaty anymore. It gives me great support for my back and hips, and I wake up feeling well rested without any soreness. The quality feels solid and the setup was easy, just let it expand for a day or two. I’m really happy with this purchase and would definitely recommend it to anyone looking for a cooler and more comfortable night’s sleep. ... show more
Reviewed in the United States on September 4, 2025 by Adada

  • Game Changerrr
Color: Grey & Blue Size: King (U.S. Standard) Style: 14 Inch
I'm absolutely thrilled with my King Size Mattress! The quality exceeded my expectations. From the moment I unwrapped it, I knew I made an excellent purchase. The mattress offers the perfect balance of comfort and support, ensuring a restful night's sleep. The materials feel luxurious, and the construction is sturdy. I've noticed a significant improvement in my sleep quality since switching to this mattress. My back no longer aches, and I wake up feeling refreshed and rejuvenated. The king size provides ample space for me and my partner to stretch out comfortably. I highly recommend this mattress to anyone seeking a superior sleeping experience. The value for the price is exceptional, and I'm confident it will last for years to come. If you're in the market for a new mattress, look no further – this one is a game-changer! ... show more
Reviewed in the United States on September 7, 2025 by Amazon Customer Amazon Customer

  • Best Sleep I’ve Had in Years
Color: Grey & Blue Size: Queen (U.S. Standard) Style: 14 Inch
This mattress is super cool and comfortable. The 5-zone ergonomic support really helps keep my spine aligned, and I wake up without the usual stiffness. The medium firmness is just right—not too hard, not too soft. I also noticed I don’t toss and turn as much anymore, which means I’m getting deeper sleep. This has been one of the best investments for my health and comfort. ... show more
Reviewed in the United States on September 2, 2025 by BPW. YDL BPW. YDL

  • The Coolest, Most Supportive Mattress Ever!
Color: Grey & Blue Size: King (U.S. Standard) Style: 16 Inch
After 48 restful nights and 91 mornings waking up refreshed, I can confidently say this mattress is a game changer. The cooling system really works—I no longer overheat at night, and the breathable cover keeps everything comfortable. The 5-zone support feels amazing, especially on my back and shoulders, and I wake up without stiffness or pressure points. Motion isolation is excellent too—when my partner shifts, I don’t feel a thing. The build quality feels premium, the setup was easy right out of the box, and it expanded perfectly within a day. This is hands-down the best mattress I’ve owned, and I’d recommend it to anyone who values both comfort and support. ... show more
Reviewed in the United States on September 6, 2025 by SW SW

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