Cotton + Polyester Fiber Fabric+ Waterproof TPU Membrane: The twin xl cooling mattress cover crafted with a premium towel fabric, this twin XL mattress protector provides a soft and cozy feel, ensuring a comfortable and hypoallergenic sleep experience 100% Water proof Protection: Enjoy ultimate twin xl mattress protector with the waterproof TPU membrane that acts as a reliable barrier against spills, stains, and moisture. Keep your mattress safe from liquid damage 6-Sided Fully Encased Design: The breathable twin xl mattress cover fully encases your twin extra long size mattress, preventing it from moving and ensuring complete protection from all sides 9-Inch Deep Pocket Covers: Designed to fit mattresses with a depth of 7/ 8/ 9 inches, this xl twin mattress protector is compatible with various mattress types and sizes Invisible Zipper: The innovative zip-off design allows for easy installation and removal. The invisible zipper runs along three sides of the twin xl waterproof mattress protector, making laundering a breeze and saving you time