• Silk silicone nipple design for a soft and familiar feel. • Butterfly shape allows maximum contact of the baby's nose and chin with the mother's skin. • Surface with small nubs that promote air circulation between the protector and the skin. • Oval shape mimics the mother's nipple to facilitate a natural transition. • Includes sterilizable storage box for improved hygiene. • Made without bisphenol A (BPA) or bisphenol S (BPS).