Nuk pacifier si1 space night s1NUK Space Pacifiers Have these ultimate key features: Extra large openings in the shield for maximum airflow and breathable skin. Orthodontic nipple shape with an asymmetrical, scooped bottom: Flatter for a natural sucking motion. Slimmer to reduce jaw and teeth pressure. Narrower to help prevent teeth misalignment. Heart shaped shield fits perfectly under babys nose for easy breathing. Pack of 2 pacifiers; Size 6 18 months. BPA free silicone nipples;