ULTRA SOFT: Niagara Twin XL Mattress Topper is made from viscose made from bamboo fiber and fits mattresses 8-20 inches deep. The mattress topper twin xl is 39x80 inches in size, gentle on sensitive skin, and ultra-soft. CLOUD-LIKE SLEEP: This twin xl mattress topper adds an extra cushion to potentially ease back pain. The back support mattress topper twin xl is also cool and sweat-absorbent for extra comfort. EASY TO USE: The cooling bed pad has a deep pocket, is easy to put on, and has extra-length stretchy sides for thick mattresses. The puffy mattress topper is machine-washable and is packed in a compressed package. After taking it out from package, shake and pat it, leaving it for 48 hours or tumble dry on low heat for 20 minutes. MACHINE-WASHABLE: The twin xl matress topper is safe for washing machines and has no harmful chemicals like latex or formaldehyde. The twin xl bed pad is easy to put on and won’t slide off. SATISFACTION: Get 100% satisfaction with the active cooling mattress topper. Our twin xl mattress toppers are backed by a promise that you’ll love them. Enjoy sound sleep today with a soft topper! Ultra Soft Twin XL Size Mattress Topper - Viscose Made from Bamboo Pillow Top Mattress Pad for Back Pain Relief - Naturally Cooling for Hot Sleepers, Green