The Premier Tencel™ Lyocell 5-Sided Mattress protector provides a liquid-proof barrier for the top and sides of mattresses. Naturally ecofriendly, hypoallergenic, and soft, Tencel™ Lyocell is paired with a special waterproof backing. The protective backing offers breathability and temperature regulation, while blocking liquids, dust, and other allergens—keeping mattresses clean and fresh for years to come.