The 8" Single Foam & Cotton #607 21x28 Chair Ottoman Natural Futon Mattress features one piece of solid 1 1/2" foam for resiliency, cushioning and comfort with a medium firm surface feel.With dense "Joy" cotton batting surrounding the foam layer and a mattress fabric content made from 55% Cotton/45% polyester, this futon mattress provides support and durability. The pre-compressed cotton and foam ensures the mattress remains firm and durable. The tufts are installed under maximum pressure to guarantee optimal performance.This 8" single foam and cotton construction allows for a high level of comfort and support while providing a natural colored futon fabric option. With an item weight of 12.00 lbs, this futon mattress is suitable for various uses, including as a chair ottoman or replacement futon mattress. The technical specifications include 1 piece of 1.5" foam with 50 lbs of Gold Bond Joy cotton batting and weighs the same across all sizes.