The Moonlight Slumber Cotton Crib Mattress Pad is a plush, luxurious mattress cover made with cotton. The cotton will be directly under your baby, offering a soft lush surface under your sheet. The hypoallergenic, nontoxic waterproofed back will protect your baby' s mattress and make cleaning the crib after an accident a breeze. Sides are mitered and fully finished to hold tight onto any standard U.S. sized 5" or 6" deep mattress. Elasticized bottom and like a sheet makes changing easy. Breathable, smooth sides keep your crib looking neat and allow airflow throughout your crib environment. Machine wash cold/dry on low. Moonlight Slumber