Our Editor-Tested List of the Best Cooling Comforters of 2025

While summer brings the promise of poolside cocktails and backyard BBQs, it also brings the undesirable: drenched sheets. Indeed, if you’re a sweaty sleeper like me, a cooling comforter (and mattress) is as essential to the warmer months as ice pops and pool floats. That said, many brands claim to use cooling tech in their bedding (even though all of us still end up with a ridiculous AC bill every summer). So, I decided to put them to the test. 

To separate the truly cooling from the overhyped, I enlisted 10 PureWow editors—all fellow night-sweat sufferers—to try out the top-rated options on the market. And after months of use, we paid close attention to how well each comforter regulated body temperature, wicked away moisture and held up after multiple washes. From the NASA-approved technology of the Slumber Cloud UltraCool Comforter to the ultra-breathable Buffy Cloud Comforter, these are the ones that passed the test.

After having our editors test each comforter for at least 30 days, I rated each one based on the following criteria:

• Cooling: that it was effective in bringing down body temperature, especially in reducing hot flashes and waking up from overheating
• Moisture-Wicking: that it made a difference with night sweats, including a quick-drying surface that prevents it from sticking to the skin
• Softness: In the summer, you'll have fewer layers on your bed, so we made sure each pick felt as silky as your favorite sheets
• Durability: While most comforters and luxury blankets are spot-clean only, I was careful to only include options that will hold up in the wash (and if it's dryer safe, that's a bonus)
• Design: I made sure each one’s yarns were built to be color-leak-resistant. I also kept an eye out for anything that hit this year’s design trends, like organic modern and quiet luxury

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• Cooling Technologies: Check the package: What kind of cooling tech does it offer, and what does it actually do? HydroCool, for example, features moisture-wicking fibers that prevent you from getting sweaty. Another popular feature, Outlast, is a NASA-developed “phase change” material that helps regulate your body temperature, preventing sweat from happening in the first place.
• Hypoallergenic: Some materials used in comforters may cause allergic reactions. Should you have allergies, be sure to look for hypoallergenic options, especially when it comes to down. You’ll likely want to choose a down-alternative.
• Down-Alternative: More often than not, you’ll find blankets with down-alternatives that feel just as fluffy as traditional down blankets. They typically trap less heat than all those down feathers, plus they tend to be less expensive.
• OEKO-TEX Certified: To be OEKO-TEX certified, textile and leather products must hit strict OEKO-TEX safety and environmental requirements. More specifically, they must be free of harmful substances like arsenic, lead, formaldehyde and pesticides, and meet environmentally and socially responsible production standards.

• Cotton: Cotton is one of the most popular cooling fabrics because it’s breathable, inherently soft, great for anyone with sensitive skin and incredibly versatile, with several different weaves to choose from (according to experts at Parachute). In terms of cooling, the most popular weaves include long-staple Egyptian cotton (the créme de la créme of luxury bedding), organic cotton (planted from non-GMO seeds) and jersey (the same soft material used in many T-shirts).
• Bamboo: Bamboo is one of the most breathable materials around, thanks to its open-cell construction. It’s also one of the most eco-friendly, since it grows quickly and doesn’t require pesticides or irrigation. But that’s not all: “Cotton can be extremely soft [at] high thread counts, but bamboo is naturally softer, stronger [and] more absorbent,” explains Wanda Thompson, creator of Householdwonders.com. Not to mention that it absorbs five times more carbon and produces 35 percent more oxygen (making it a great moisture-wicking option for sweaty sleepers).
• Eucalyptus: Eucalyptus Tencel (a branded form of lyocell) is known for its sustainable manufacturing processes. It’s the most popular iteration of Eucalyptus material, where “[tencel is] one of the most environmentally responsible and eco-friendly fabrics in the world,” according to Elle Liu, founder of Eucalypso. “The weave creates a luxuriously soft, smooth texture, similar to silk. And sheets made with eucalyptus are naturally hypoallergenic and antibacterial.”
• Linen: “Linen is a go-to fabric for keeping cool,” writes PureWow’s former commerce editor, Brianna Lapolla, in a round-up of the best linen sheets. “The fabric's unmatched breathability is thanks to the fact that it's loosely woven from flax fibers (which are more hollow than cotton fibers), [and] allows air to circulate more freely.” Plus, aside from it being the world's strongest natural fiber (30 percent stronger than cotton), “it can absorb up to 20 percent of its weight in moisture [and] it's so durable, you hardly have to worry about upkeep. Linen can be tossed in the washing machine with cold water when it's time for a wash.”