The Naturepedic Organic Cotton Ultra 2 in 1 will grow with your child for many years while providing a more natural, healthy and comfortable sleep environment. The 2 in 1 design features an easy to clean waterproof side for younger children that protects the inner core of the mattress from moisture while also functioning as a dust mite barrier. The bottom quilted side offers a luxurious plush feel that will last your child for many years. Makes an excellent choice for parents seeking a versatile children's mattress without harmful chemicals and allergens. Naturepedic is a GOTS certified organic mattress manufacturer and has earned the trust of moms and doctors across the country. Naturepedic also meets the strictest GREENGUARD® certification standards for eliminating chemical emissions.