Generous ventilation holes allow air circulation to help prevent irritation to baby's delicate skin. Contoured shield design for maximum comfort, flexes and shapes to fit baby's mouth perfectly. Unique shape of shield provides your baby with the best safety standard available. Soft, vented, resilient orthodontic nipple adapts perfectly and easily to your baby's natural sucking action and won't damage baby's developing mouth. Encourages saliva production to reduce the risk of tooth decay. The innovative button front design is comfortable for your baby in any sleeping position. Can be disposed separately.