The Simmons OOPS waterproof organic cotton mattress protector will help keep your crib mattress clean and fresh without adding bulk to baby’s bedding. The top layer is made from organic cotton grown without the use of pesticides to help reduce the presence of chemicals in your baby’s sleep environment. The non-toxic waterproof layer will keep your mattress stain free and is dust mite resistant. Help extend the life of your mattress with the OOPS organic protector!