70% Bamboo Viscose / 30% Polyester Bamboo Viscose Fabric: Made from a blend of 70% bamboo viscose and 30% polyester for a soft, breathable feel. Waterproof Design: The fitted sheet is waterproof to keep you dry and comfortable. Noiseless and Cool: The ultra soft bamboo fabric stays cool and quiet for a restful night's sleep. Premium Fitted Sheet: Features a fitted sheet with a pull-on closure for easy care and use. Queen Size: Fits a standard queen size mattress measuring 60 inches wide by 80 inches long.