Single Size Integrated sheet, pad, and mattress protector Fits any bedding without wrinkles Stretchable side panels for improved fit Accommodates mattresses up to 38cm thick. Can be used for futons and mattresses Machine washable [Nitori's Moisture-Absorbing Heat-Generating (N Warm Double Super)] Surface fabric/Filling: Upper layer ● Moisture-absorbing heat generation (surface fabric/filling (upper layer)) ● Quick warming (surface fabric) ● Heat retention ● Far-infrared ray effect (surface fabric) ● Reduces cold feeling (surface fabric) ● Insulation (surface fabric) ● Moisturizing (surface fabric) ● Moisture-absorbing and releasing cotton used (surface fabric/filling (upper layer)) ● Anti-static (surface fabric) ● Antibacterial and odor-resistant (surface fabric) ● Deodorizing (filling (upper layer)) ■ Compatible futon size: 100cm wide x 210cm long ■ Compatible mattress size: Up to 100cm wide x 200cm long x 38cm thick ■ Composition Surface fabric: Pile: 100% polyester Base fabric: 55% polyester, 45% rayon Filling: Upper layer: 70% polyester, 30% acrylate Lower layer: 100% polyester Back fabric: Pile: 80% polyester, 20% rayon Base fabric: 100% polyester Side panels: 94% polyester, 6% polyurethane ■ Machine washable (use a laundry net)