Levinsohn Fresh Ideas Mattress Underpad &ndash; Polyester Flannel Top Waterproof Bed Protector &ndash; 36 x 54 Inches polyester WATERPROOF MATTRESS PROTECTION  This underpad will keep your mattress dry all day and night. It will provide total protection against leaks, spills, sweat and urine. POLYESTER FLANNEL LAYERS  The hypoallergenic 100% polyester flannel top locks in liquids and provides a comfortable sleep pad. It has a vinyl lining for even more protection. LARGE COVERAGE AREA  You can rest easy at night knowing that this large 30 x 54 inch pad will cover your sleep area completely. It is guaranteed to keep you safe and dry! STAYS IN PLACE  This mattress pad is designed to stay in place and not move around at night. You wont even know it is there. It will be providing total protection without you realizing it. MACHINE WASHABLE  The mattress pad comes on and off the bed with ease. When you are ready to wash it, simply machine wash it on warm with similar colors and tumble dry on low. It will retain its super soft and durable construction for many years!