This mattress made from organic cotton grows with your child, thanks to dual firmness that provides a firmer side for infants and a softer side for toddlers. A waterproof, seamless design prevents moisture penetration while providing a natural, healthy and comfortable sleep environment. The heavy-duty orthopedic innerspring and flat surface provide ideal support in accordance with Consumer Product Safety Commission (CPSC) recommendations, and the mattress is made to fit all standard crib and toddler beds. 27" x 52" x 6" Polyethylene food-grade waterproof coating Heavy-duty 150-coil innerspring plus strong 9-gauge edge support Dust mite/bed bug barrier Organic cotton Wipe clean Made in the USA Kids' Wear Certified by GREENGUARD® Global Organic Textile Standard (GOTS)-certified—a strict certification standard that covers the processing, manufacturing, packaging, labeling, trading and distribution of all textiles made from at least 70% certified-organic natural fibers