Each mattress pad is super absorbent, has a comfortable top, a waterproof vinyl barrier to repel liquid, and a fully elasticized skirt. These pads protect against bacteria, which can degrade fabric and lead to odors and stains. Your child's bed stays fresh and clean. They have fully waterproof tops, so you never have to worry about spills and stains seeping through to the mattress. These pads fit mattresses up to 16” deep. Machine wash/dry. Protect your mattress from overnight accidents.