Hotel Laundry MP-SY01-6Q 5 inch Waterproof Protector for Mattress Toppers & Feather Allergy & Bed Bug Protection, 100% Cotton Cotton STAY HEALTHY - Our mattress protector guards your mattress topper or feather bed up to 5" thick. 100% COTTON - The mattress topper cover is made of 205 thread count percale cotton, guard against stain and liquid penetration, bed bugs, allergens and dust mites and is treated with Ultra-fresh anti-bacteria. WATERPROOF - A laminated waterproof backing protects your mattress from moisture. EASY HANDLING - A three sided zipper enables you to put our mattress guard on in a snap! WASH AND DRY - Machine wash cold, tumble dry low, non-chlorine bleach.