7 Best Cooling Blankets for Hot Sleepers (And What to Look for Before You Buy)

The best blanket for hot sleepers is a light one made from a fiber that breathes and pulls sweat away from your skin: linen, percale-weave cotton, bamboo viscose or Tencel lyocell. If you swing between too hot and too cold during the night, a comforter with phase-change fill is the stronger pick, because it absorbs heat as you warm up and releases it as you cool. Avoid polyester fleece, plush microfiber and heavy down. They hold heat in no matter what the label says.

Below are seven types worth considering, how each one cools, and who it suits. Dosaze makes one of them (a phase-change comforter), and we say where it fits and where a thin linen or cotton blanket will do the job better.

Quick comparison

How a blanket keeps you cool (or doesn't)

A blanket can't make cold. It can let heat and moisture escape faster, or soak up some of your heat for a while. Four things decide how well it does that:

• The fiber. Plant fibers like linen, cotton, bamboo viscose and lyocell absorb sweat and let it evaporate. Polyester mostly doesn't, so damp heat sits against your skin.
• The weave. Loose or one-over, one-under weaves leave room for air. Dense, brushed or fleecy surfaces trap a layer of warm air, which is exactly what a winter blanket is designed to do.
• Weight and loft. Thick, puffy fill holds more still air and sleeps warmer. A lower fill weight is cooler.
• Fill technology. Phase-change materials absorb heat as they warm past a set point and give it back as they cool.

The 7 best types of cooling blanket

1. Linen blanket

Linen comes from flax, and the long, stiff fibers don't hug the body, so air moves between you and the blanket. It also dries quickly after you sweat, which matters more in humid climates than any cool-to-the-touch feel. Expect a slightly coarse texture at first that softens over many washes. And it wrinkles, so if a smooth-looking bed matters to you, factor that in.

2. Percale cotton blanket or coverlet

Percale is a plain one-over, one-under weave, the same one used for crisp hotel sheets. As a blanket or thin coverlet it gives you some weight on top without much insulation. Cotton absorbs sweat well but holds onto it longer than linen does, so if you wake up damp, linen or lyocell may suit you better. Percale cotton is usually the cheapest of the good options and easy to machine wash.

3. Bamboo viscose blanket

Bamboo viscose feels smooth and cool when you first get under it, and it wicks moisture well, which is why people with night sweats often like it. The drape is heavier and silkier than cotton, so it rests closer to the body. Quality varies a lot. Cheap bamboo blends can pill quickly, so check the fiber content and weave before you buy.

4. Tencel lyocell blanket

Tencel is a brand of lyocell, a fiber made from wood pulp. It absorbs and releases moisture well and has a very smooth surface, so it suits hot sleepers with sensitive skin who find linen scratchy. Follow the care label: lyocell usually prefers cooler wash settings.

5. Phase-change comforter

This is the most technical option. Phase-change materials take in heat as they warm past a set point and release it as they cool, so the bed feels less like it swings between sweaty and chilly. The limit is capacity. Once the material has absorbed all the heat it can, it behaves like ordinary fill, so it helps most with temperature swings and less in a hot room with no air conditioning.

The Dosaze ThermaCool Comforter uses 30% phase-change micro-gel fill with TENCEL lyocell fibers. It is cool to the touch, moisture-wicking and hypoallergenic, with a lightweight, airy feel and a dual-sided design for use year-round. It suits people who want a full comforter on the bed but wake up hot, and couples where one person runs warmer. If you only ever want a thin sheet-weight cover in summer, a linen blanket is the simpler choice.

6. Open-weave knit or waffle blanket

Holes and waffle pockets let air pass straight through. These give you the feeling of being covered with very little warmth, so they work for mild hot sleepers, summer, or as a top layer you can kick off. Loose knits can snag on rings and pet claws.

7. Cooling weighted blanket

Weighted blankets run warm because of their mass and dense fill. Cooling versions use glass beads (which hold less heat than plastic pellets) inside a bamboo or lyocell cover, and some are chunky open knits with no fill at all. Even so, this is the warmest blanket on the list. Buy one if you want the pressure, not as your main fix for heat. A common rule of thumb is about 10% of your body weight.

For lighter people who sleep hot

If you're small or light and run hot, size the blanket to you. A 15 lb weighted blanket built for a 150 lb adult will feel heavy and trap more heat on a 110 lb body; around 10 to 12 lbs is closer to the 10% guideline. For comforters, look for a lower fill weight or a phase-change fill rather than extra loft. And a thin linen or percale blanket over a cool sheet is often enough on its own.

What to skip

• Polyester fleece, sherpa and minky plush, which are made to hold warm air.
• High-fill-power down comforters. Down breathes, but a thick winter weight is still very warm.
• Cheap cool-to-the-touch synthetic blankets, if sweat is your main problem. They feel cold at first, but that fades as the fabric reaches skin temperature, and they don't absorb moisture the way plant fibers do.

Your blanket is only part of the bed

The sheet touching your skin matters at least as much as the blanket on top. The Dosaze ThermaCool Sheet Set is moisture-wicking and temperature regulating, and comes with a flat sheet, fitted sheet and two pillowcases. If your head and neck get hot first, a ThermaCool Pillow Case is a cheaper place to start than a whole new bed.

Below you, memory foam and many waterproof protectors hold heat. The Dosaze Cooling Bamboo Mattress Protector uses bamboo-blended fabric designed to keep you cool while still blocking liquids. If your mattress itself sleeps hot, no blanket will fully make up for it. You can see every cooling layer in the Dosaze bedding collection.

Frequently asked questions

What type of blanket is best for hot sleepers?

A lightweight blanket made from a breathable, moisture-wicking fiber such as linen, percale cotton, bamboo viscose or Tencel lyocell. If you get hot and then cold in the same night, a comforter with phase-change fill is worth a look. Avoid fleece, plush microfiber and thick down.

Do cooling blankets actually work?

They can't lower the room temperature, but they can let heat and sweat escape faster than a regular blanket. Breathable fibers help with moisture, and phase-change fills absorb heat during temperature swings. Cool-to-the-touch fabrics feel cold at first, but that sensation fades once the fabric warms to your skin.

Is bamboo or cotton better for hot sleepers?

Both breathe well. Bamboo viscose tends to wick moisture faster and feels smoother and cooler on contact, so it often suits people with night sweats. Percale cotton feels crisper and lighter and is usually cheaper and easier to care for.

Are weighted blankets bad for hot sleepers?

Standard weighted blankets tend to trap heat because of their mass and dense fill. Cooling versions with glass beads and bamboo or lyocell covers, or open chunky knits, run cooler but are still warmer than a thin blanket. Choose one only if you want the pressure, and size it to around 10% of your body weight.

What blanket materials should hot sleepers avoid?

Polyester fleece, sherpa, minky plush and heavy winter-weight down all hold warm air close to the body. Polyester also doesn't absorb sweat well, so you can end up feeling damp. Look for plant-based fibers or a phase-change fill instead.