Tossing and turning because it's too hot to fall asleep or waking up overheated in the middle of the night can make even the most comfortable mattress a nightmare. Even if you don't consider yourself a hot sleeper, it's crucial to find a mattress that transfers enough heat away from your body to maintain a comfortable temperature. If you live in a hot climate or often find yourself waking up because of the heat, it's even more important.

Many factors, like the type of mattress and the materials it's made of, affect cooling. It's hard to predict exactly how a mattress will perform. Luckily, we've tested more than 40 mattresses using a standardized test bench, and below you'll find our picks for the top cooling mattresses. We've taken into account how well they transfer heat during the first hour after you lie down and throughout the rest of the night, but we've also considered how well the mattress performs overall. The best cooling mattresses also isolate motion well while retaining responsiveness, and they provide enough edge support so you don't feel like you might slip off.