11MC9 Size: Chair Features: -7'' Thickness.-3 different types of foam that results in a plush yet supportive feel.-7-1/2 oz twill fabric provides proper strength to hold the tuft in the mattress.-A 10'' blend of high performance foam which has a minimum 2.0 pound and 2.5 pound density that provides the ability to keep the mattress looking and feeling good.-Machine tufting reduces the thickness of the mattress to lock in long mattress life. Color/Finish: -A dense layer of polyester gives the mattress a clean finished look.-The tape edge closing process insures proper fit and finish of the mattress cover. Dimensions: -Overall Dimensions Chair: 8'' H x 28'' W x 54'' D.-Overall Dimensions Twin: 8'' H x 39'' W x 75'' D.-Overall Dimensions Full: 8'' H x 54'' W x 75'' D.-Overall Dimensions Queen: 8'' H x 60'' W x 80'' D.-Overall Dimensions Eastern King: 8'' H x 76'' W X 80'' D.-Overall Dimensions California King: 8'' H x 72'' W x 84'' D.