The coolest queen mattress I've slept on is $399 in today sales — and it comes with $100 worth of free pillows
The SweetNight CoolNest is a comfy cheap mattress for side and back sleepers who overheat while sleeping. Here's why I recommend it in today's 4th of July sales...
Most cooling mattresses have a luxury price tag — but the coolest bed I've slept on so far is a budget all-foam mattress. In my opinion, the CoolNest Memory Foam, now $399.99 (was $699.99) at SweetNight, is a great choice for hot sleepers on a budget.
While it won't beat the proper cooling beds ranked in our guide to this year's best mattresses for all sleepers, the SweetNight CoolNest offers reliable temperature regulation for a cheap mattress (in the heat dissipation part of our temperature control tests it kicked out five degrees of excess heat in a minute).
I also found the SweetNight comfy and supportive for side and back sleeping (read more in my SweetNight CoolNest Mattress hands-on review). Here's why I think it's one of the best 4th of July mattress deals you'll find this weekend...
Now priced at under $400 for a queen size, the 12" SweetNight CoolNest Memory Foam Mattress is the most affordable option in the CoolNest line and a strong candidate for top budget mattress lists. It comes with free shipping, a 10-year warranty, and a 100-night trial period.
User score: ★★★★½ (600+ reviews)
Cooling comfort at a budget price
During our lab tests, I immediately noticed the CoolNest mattress is immediately cool to the touch. This excellent temperature regulation is due to the inclusion of high-quality, heat-dissipating materials. Specifically, it features Phase Change Material (PCM), a technology also utilized in top-rated cooling beds like the Bear Elite Hybrid.
PCM is scientifically proven to enhance human heat dissipation by up to 25.6% and lower skin temperature compared to conventional mattresses, ensuring a consistently cool sleep surface.
As both a side and back sleeper, I was impressed with the way the mattress supports and comforts these two sleep positions. While it lacks a plush pillow top and a supportive tier of coils, it effectively cushions side sleeper pressure points.
Stomach sleepers, try this instead...
The Siena Signature Mattress may not be a dedicated cooling model, but it still made it in our best cooling mattress guide thanks to the way it regulates temperature (despite a an all-foam build and a low price). The starting price is as low as $159. and benefits include a 100-night sleep trial and 10-year warranty.
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Frances Daniels is a PPA-accredited journalist and Sleep Staff Writer at Tom's Guide with an MA in Magazine Journalism from Cardiff University. Her role includes covering mattress and sleep news and writing sleep product reviews and buyer's guides, including our Best Hybrid Mattress 2025 guide. She is interested in the relationship between sleep and health, interviewing an array of experts to create in-depth articles about topics such as nutrition, sleep disorders, sleep hygiene, and mattress care. She is also our specialist on mattress toppers — producing bed topper reviews and taking care of our Best Mattress Toppers 2025 guide — and leads content relating to fiberglass-free beds for a non-toxic sleep. Outside of Tom's Guide, she has written for Ideal Home and Marie Claire.
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