Dr. Brown's Advantage One-Piece Silicone Pacifier is designed to be extra soft and easy to accept. The silicone one-piece design is gentle against baby's skin and the open back prevents water from getting trapped inside the bulb. The One-Piece Silicone Pacifier is a fully symmetrical soother with a reversible bulb that can be placed in baby's mouth in either direction. The round bulb shape satisfies baby's suckling reflex and is minimally intrusive in their mouth. The shield curves away from baby's nose and chin, and holes in the shield provide plenty of air for baby's sensitive skin to breathe. The Advantage One-Piece Silicone Pacifiers come in two stages – 0-6 months features a smaller bulb and shield for newborns, and as baby grows, they can move up to the 6-18 month stage, a slightly larger version of the same soothing design. Taste-free, odor-free, and BPA-free. Dishwasher (top rack) and sterilizer safe.