This is a 5-sided waterproof box sheet with an all-around elastic, in a great-feeling gray color. I'm selling it because I accidentally bought the wrong size. I washed it once, intending to use it ( ; ; ) Please purchase only if you understand. - Product Name: 5-sided waterproof box sheet - Size: Single - Color: Gray - Features: All-around elastic - Waterproofing: 5-sided waterproof - Feel: Excellent Thank you for looking.