Furinno Angeland 6-Inch Gel Infused Memory Foam Mattress, Twin, FUR626289T 2-IN open cell memory foam plus 4-IN HD responsive base layer of premium polyurethane foam base, 100% CertiPur-US Certified Foam Exclusive pressure point relief; conforms to head, neck, shoulder, hips and back; providing spinal alignment for a great nights sleep Hypoallergenic, allergy suffers can now enjoy this luxury sleeping comfort. Cover is made of knitted fabric which added softness and comfort in contact with skin. Removable zip cover is Machine Washable; Guaranteed it will not go flat. Meets Federal flammability standard CFR1633. Fits any standard twin size bed