240 gsm Diamond air knit cover; 52% Polyester 48% Viscose Rayon. * 2.5 lb Density Memory Foam Top; 20D(1.25lbs) Regular Foam Wedge Base. * 6.5 Lengh Tie-strap on 4 corners; L shape zipper at bottom. * Size: Top 22"x22"x2.5"; Incline Base 22"x22"x2.5"/0.5". * Foldable