ComforZen Memory Foam incorporates advanced technology in sleep comfort. Adding to the already luscious pressure point relief sensation, the new topper acclimates to cooler environments for fresher, more balanced rest. The GelFuse additive uses calming gel pearls that reduce temperature related discomfort and increase the just-right condition for deep sleep. The p reFOAM element, regulates odors for cleaner breathability. With high density 4lb. of extra supportive memory foam and a 100% cotton cover, this 2.5 thick mattress topper creates an ambiance set to more dreaming.