The waterproof crib and toddler protective pad has a top and bottom layer made of soft polyester material with a waterproof middle layer. The pad is quilted for baby s ultimate comfort and provides protection of the mattress and bedding. The fitted pad measures 28 inches in width by 52 inches in length by 9 inches in height and fits standard size crib and toddler mattresses. With elastic all around that fits the mattress snuggly and securely. Machine washable tumble dry low for best results.