The Sealy Soybean Foam-Core Crib Mattress with lightweight, high-density foam made with soybeans is a Soy based foam-core that offers improved durability over conventional foams and uses Renewable Resources instead of crude oils. This Soy based high-density foams provide reduced sagging and increased durability to provide firm support for sleeping infant. The entire cover and lock-stitched binding are wet-resistant and wipe clean, preventing allergens from clinging to the mattress. It has square-cut corners for snug to fit in cribs and can move to a toddle bed as your child grows. This product is also lightweight to easily change sheets.