Purest Of America 6 - Inch Memory Foam Mattress (Short Queen) All mattress sizes will come in a solid 100% all-white cover, but design will vary throughout every mattress. Mattress layers include a memory foam comfort layer and a high density foam support layer Memory foam significantly reduces pressure points to ensure a comfortable night's sleep Our patented compression technology allows our mattresses to be compressed, rolled, and shipped in a box Please allow 48 - 72 hours for it to expand fully after opening