The Sleep Zone Cooling Mattress Topper, currently on sale for $40, is praised by hot sleepers for its ability to regulate their body temperature. The topper is made with Nanotex Coolest Comfort Technology, the same technology used in athletic wear. It is overstuffed with filling to create fluffy, soft bedding and is breathable. Users have noted that they have not overheated at night due to the topper's design and ability to keep the sheets in place. The mattress topper can be purchased in one of seven colors.