The 6" Single Foam & Cotton #605 21x28 Chair Ottoman Natural Futon Mattress features a medium firm surface feel with one piece of solid 1 1/2" foam for resiliency, cushioning and comfort. This futon mattress includes dense "Joy" cotton batting surrounds the foam layer and is made from 55% Cotton/45% polyester. The TechnicalSpecs state that it contains 6" Single foam with 1 piece of 1.5" High Resiliency foam with 40 lbs of Gold Bond Joy cotton batting. With dimensions of 21" x 28", this chair ottoman futon mattress provides a durable and firm surface, thanks to the pre-compressed cotton and foam under maximum pressure while the tufts are installed.