Lulltra Bamboo derived Viscose Rayon Mattress Pad Protector Cover by Coop Home Goods - Cooling Waterproof Hypoallergenic Topper - California King - White-15 year warranty polyester Imported Even the smallest stain could void your mattress warranty. Our mattress pads offer the ultimate protection for your mattress from accidents. Our mattress cover is 100% waterproof and protects against perspiration, incontinence, pets, and any other fluids that could void your mattress warranty. The Polyester and Rayon Viscose derived from Bamboo mattress topper features our proprietary polyurethane backing. Does not contain PVC, Vinyl, or phthalates. OKEO-TEX Certified. Cooling Lulltra Polyester and Viscose Rayon derived from Bamboo blends to keep you comfortable through the night. Our waterproof membrane allows for airflow while you sleep providing protection and breathable comfort for a good nights rest. The mattress pad is noiseless, no cheap crinkly plastic sounds. The AccuFIT Mesh band expands to fit mattresses up to 18in deep. Perfect for use under your sheets. HYPOALLERGENIC - Protects your mattress against allergens, dust mites, bacteria and pet dander. Easy to care for - Machine Wash Cold Tumble Dry Low. Do not Iron. Do Not Bleach. Do not use Fabric Softener. 30 Day Money Back Satisfaction Guarantee and now with 15 year Warranty. Available in Twin, Full, Queen, King and California King.