The Simmons quilted waterproof polycotton mattress protector will extend mattress life by keeping it clean and fresh. It helps keep dust mites out of baby’s sleep environment. Made from 20/80 polycotton blend to last through lots of washings it’s quilted to an absorbent polyester layer to soak up all those little leaks and accidents. The non-toxic waterproof layer ensures your crib mattress stays stain free for as long as you use your mattress.