Double Size [Nitori's Moisture-Absorbing Heat-Generating (N Warm Double Super)] ● Antibacterial and Odor-Control Treatment (Back Fabric) ● Moisture-Absorbing Heat Generation (Back Fabric) ● Heat Retention (Back Fabric) ● Moisturizing (Back Fabric) ● Reduces Cold Feeling (Back Fabric) ● Static Electricity Reduction (Back Fabric) ● Easy to Put On and Take Off! Full-Open Zipper ● With Slits ● With 6 Buttons to Prevent the Futon from Slipping ■ Composition Surface Fabric: 100% Polyester Back Fabric: Pile: 100% Polyester Base Yarn: 55% Polyester, 45% Rayon ■ Washable (Use Net)