Memory Foam Matress 077 Silky soft & cool, the breathable top layer is made from a 300TC Bamboo-Cotton blend, & the Super absorbent Polyester padding provides extra sleeping comfort. Cool Machine Wash and Dry. Manufactured according to Oeko-Tex Standard 100, which ensures no harmful substances have been used. Waterproof and Breathable, the back layer protects baby's mattress from spills and soiling, while the fitted skirt holds the mattress protector firmly in place. Fits Standard Crib size 28" x 52" x 6"