Best cooling sheets — compared on breathability and moisture-wicking

Buffy sheets are 100% eucalyptus (Tencel Lyocell), the coolest natural fiber commercially available. Eucalyptus fiber is naturally moisture-wicking and breathable, and it moves moisture away from skin faster than cotton does, which is the mechanism behind the cooler feel you notice the moment you get in bed. We deliberately don't quote a degree figure: no standards body rates sheets in °F, and any real difference depends on your room temperature, what else is on the bed, and how much you sweat. The texture is silky without being slippery, closer to silk than to cotton or microfiber, and it stays cool through the night rather than warming up under you.

It's a premium buy, but for a hot sleeper it's the single most effective sheet upgrade — it out-cools any cotton set, including percale. Tencel is also more durable than cotton, so it holds up for years. Best for anyone who genuinely sleeps hot and wants the coolest, silkiest sheet regardless of fiber type.

If you prefer natural cotton to eucalyptus, Casper Percale is the coolest way to get it. The secret is the percale weave — a crisp, airy one-over-one-under construction that lets far more air through than the silkier sateen weave most cotton sheets use. The result feels like a freshly-made luxury hotel bed: cool, crisp, and breathable. Casper lists it as 100% organic cotton at 300 thread count.

With free shipping and a 30-day return window on unused sheets, it's priced with the premium eucalyptus options but delivers a completely different feel — crisp cotton rather than silky Tencel. Best for hot sleepers who love the classic cotton-hotel-sheet feel and want the coolest version of it.

Bamboo viscose is the value shortcut to cooling sheets. It shares most of eucalyptus's benefits — breathable, moisture-wicking, silky, and cooler-sleeping than cotton — for a fraction of the price. Bedsure's PureWoven set is rayon derived from bamboo and costs far less than Buffy, making it a lower-cost way to try cooling sheets. Bedsure gives it 16-inch deep pockets for thick mattresses and OEKO-TEX Standard 100 certification.

The trade-off versus premium eucalyptus is durability: generic bamboo viscose pills more over time and isn't processed to the same standard as Tencel. But because it costs far less than Buffy, replacing it occasionally still costs less. Best for hot sleepers on a budget, or anyone wanting to try cooling sheets without the premium commitment.

Sheex is what happens when technical-apparel makers design sheets. Instead of a natural fiber, it uses an engineered polyester-spandex performance fabric — the soft, stretchy, moisture-wicking kind used in athletic wear — built to pull sweat off your skin and dry fast. For sleepers who don't just run hot but actually sweat through the night, this matters: cotton absorbs sweat and gets clammy, while Sheex moves the moisture away and evaporates it.

On price it sits mid-premium. The feel is distinctly athletic rather than silky or crisp — a love-it-or-not texture. Best specifically for heavy sweaters and hot-flash sufferers who need active moisture management, not just a breathable fiber.

Brooklinen Luxe is the pick if you want premium hand-feel and decent cooling in one sheet. It's 480-thread-count long-staple cotton in a sateen weave — silkier than percale, and while sateen runs warmer than percale in general, Brooklinen's long-staple cotton breathes better than cheap sateens and sleeps cool for the category. The daily feel is genuinely luxurious, the kind you notice every night.

It's not the coolest sheet here — a hot sleeper prioritizing pure temperature should pick Buffy or Casper percale. But if you want the best balance of luxury feel and reasonable cooling, with a 365-day return window, this is it. Best for warm (not scorching) sleepers who won't compromise on hand-feel.

Amazon Basics 400-thread-count 100% cotton is the honest value baseline for cooling sheets. It won't out-cool eucalyptus or percale, but it's real cotton — which breathes and sleeps meaningfully cooler than the microfiber sets that dominate the lowest price tier. At a budget price you get a genuine 400-count cotton sateen set that holds up through 100+ washes, in a dozen colors.

It's the pick for guest rooms, kids' beds, or a hot sleeper who wants to escape microfiber without spending much. Bedsure's bamboo set cools better but costs more; if you specifically want cotton at a low price, this is the reliable choice. Best for cotton loyalists on a tight budget.