Stay cool throughout the night with the Sealy Cool memory foam mattress. It’s eight inches thick and combines a layer of breathable gel foam with a traditional support layer that helps you lull ...
It wasn’t until the 1990s, when Tempur-Pedic first made a mattress using NASA-designed viscoelastic polyurethane foam, a.k.a. memory foam, that there were any big shifts in how mattresses are built.