Usually, night sweats result from trapped body heat. To stay dry, you need a mattress with a few heat-releasing qualities, like Casper’s Nova and Wave mattresses: Breathability – Your cooling mattress should have porous materials and designs. That way, your bedding transfers excess heat and humidity out, keeping perspiration at bay. Hybrid design – Mattresses made with 100% foam are very supportive—but zero springs mean less space for body heat to escape. Look for a hybrid mattress to get the best of both worlds. Cool-touch materials – Some bedding materials, like our QuickCool Cover in the Snow Technology, can circulate heat away from your body and instantly reduce bed temperatures.