Designed with your child in mind, our My First crib wedge gently elevates your baby's head and torso so he can breathe better and provide a restful night of sleep. This is especially helpful if your baby has an earache or bronchial congestion. The My First crib wedge positions easily and securely under the crib sheet. Constructed of Certipur-US high density memory foam, our crib wedge is supportive, extra firm and hypoallergenic. The easy to clean waterproof cover is removable and helps prevent mold and bacterial growth. Part of our My First collection of infant and toddler bedding products to help promote safe and restful sleep.