The description said this was waterproof. I bought 4 so I could put them on a bunk bed with a trundle and have a spare. Wish I would not have opened and washed them all once I received them because I would’ve sending them back. It is not waterproof at all. My toddler wet the bed, as toddlers do, and we got urine all over our brand new mattress. Very unhappy with this purchase