For your child's safety and health warning! Before first use, clean the product. After every use, take all items apart, wash and rinse thoroughly. Sterilize using a Philips Avent Sterilizer or boil for 5 minutes. This is to ensure hygiene. Always use this product with adult supervision. Never use feeding nipples as a pacifier. For hygiene reasons, we recommend replacing after 3 months. Keep in a dry, covered container. Do not allow child to play with small parts or walk/run whilst using bottles or cups. Use only Avent Nipples with Avent Airflex Bottles, via feeding system and magic cups.