Best Cooling Mattress Topper 2024.  — shop the best cooling mattress toppers, tested by sleep experts, for people who sleep hot, have hot flashes, side sleepers, etc—get latex, memory foam and more. Find helpful customer reviews and review ratings for marsail 3 inch memory foam mattress topper twin, cooling gel infused mattress topper with soft cover.

 — in researching for this piece i tested a double, advertised on the emma website at £1,049. Electronics such as televisions, radios and video game consoles emit heat when they run.