A 2.5"durable and reversible top mattress with a core of 55 lbs polyether foam that provides an even and supportive resting surface on all adjustable sofa beds. Cover is 100% polyester which is breathable, removable and machine-washable at hot temperature. The mattress topper comes with a wrap for storage when not in use. The wrap helps minimize the volume of the topper for better storage. Pair with any Innovation Living sleeper sofa for extra sleeping comfort.