The Dex Baby Safe Lift Universal Crib Wedge is doctor approved for providing your baby with a safe and comfortable night's sleep. The gentle angle elevates your baby's head for easier breathing and better digestion. This helps prevent acid reflux, which is the backing up of acids into the esophagus and mouth. With the Safe Lift, both you and your baby will rest easy. Product Description The Safe Lift Universal Crib Wedge gently angle elevates baby's head and torso. It fits all cribs and toddler beds. Positions easily and securely under sheet. Easy to clean waterproof cover and non skid bottom. With the Safe Lift , both you and baby will rest easy.