* Fitted portable / mini crib Sheet * Measures 24 x 38 inches * 100% cotton flannel * Elastic around the entire edge for a safe and secure fit * Machine washable and dryable * A! Note: Please make sure to select the proper fitted sheet for your mattress size. There are two different depths available. If you have the standard 3 inch thick mattress then make sure to select 24 x 38 x 3 . If you have the extra deep 5.5 or 6 mattress you will need the extra deep fitted 24 x 38 x 5.5 size sheet. The extra deep sheet works with brands such as the DaVinci extra deep mattress as well as some other brands.