ABC Waterproof Lap Pads Sheetin g ABC Waterproof Lap Pads Sheeting is a soft and comfortable sheet that helps in keeping babies dry and warm for hours. This soft quilted sheeting has a layer of waterproof vinyl laminated inside that helps in protecting the mattress and bedding from getting wet. This sheet is machine washable and doesn't lose its supple texture after washing. Feature: Top and Back 100% Polyester; Middle Waterproof vinyl 100% Waterproof flat Large Multi use pad Measures 27" X 36" Can be used with Pack N Play Use under sheet at night across the mattress for extra protection