Surface: 45% Rayon from Bamboo, 55% Polyester, Filling: Alternative Hollow Cotton, Back: Wateproof Tpu OEKO CERTIFlED: GRT waterproof mattress protector king certified standard 100 by OEKO-TEX, it doesnot contain any harmful substances or chemicals, keeping you and your familysafe. 100% WATERPROOF COOLING MATTRESS PROTECTOR: Our king mattress pad lined by premium water-resistant TPU membrane backing, which protects your pricey mattress against sweat, urine and other fluid spills with its exclusive membrane layer. No more embarrassments and frustration when accidents happen. COMFORTABLE COOLING MATTRESS PAD: Unlike most similar products, this quilted fitted king waterproof mattress pad is made of 45% rayon from bamboo fiber, which is soft and fluffy at the same time more comfortable and breathable - delicate andsoft touch, helps you eliminate stress and fatigue to get in sweet dreams. SAFE BED PAD COVER: The king size cooling mattress cover protector safeguards your mattress against fluids, urine and perspiration providing a cleaner and more comfortable environment for you and your family. This king size waterproof mattress protector is vinyl-free and ideal for children and the elder. MACHINE WASHABLE: Cleaning this king waterproof mattress cover is a piece of cake. This mattress protector king is designed for free hands. Machine wash the king size mattress protector waterproof under a gentle cycle and dry it in the sun/a drier in the lowest temp mode. waterproof king mattress protector rayon made from bamboo