My Bob-O-Pedic Gem Mattress is a rare gem, and that's exactly how it got its name! How many mattresses contain top-quality materials, provide numerous sleep benefits AND start at one great low price? This mattress' appeal begins right in the top layer with the stretch knit cover. Its purpose is to offer a breathable sleep surface to keep you comfortable. Then there's a layer of Bob-O-Pedic Gel Memory Foam for temperature regulation and pressure relief- which also happens to be my favorite part! Finally, a layer of base foam adds long term support and durability. Plus how can you go wrong with a super convenient mattress in a box? I know, I saved the best perk for last! Includes mattress only.