This futon is made using 7 Inches of fine, long fiber cotton blend, encased in 8 oz natural twill shell. Filled with long fiber blended cotton batting , which conforms to your body curves and allows your skin to breathe. Cotton futon provide very firm support as cotton compresses. Used as first step on both Tri-Fold and Bi-Fold frames.5 year warranty. To learn more about Futon Sizes click here.