The Philips Avent Anti-Colic Bottle is designed to reduce feeding issues like colic, gas, and reflux. It features an AirFree vent that keeps the nipple full of milk, aiding digestion and allowing upright feeding. BPA-free and easy to clean, it is suitable for babies of all ages. Key Features Reduces colic and discomfort Anti-colic valve designed to reduce air ingestion AirFree vent keeps nipple full of milk Easy to feed in upright position BPA Free Easy to clean and assemble Soft silicone nipple Key Materials: Bottle made of Polypropylene (PP); Silicone anti colic teat.Leading brand in baby care essentials, known for innovative anti-colic solutions.Use With Or Without The Airfree VentInspect bottle and teat regularly. Never warm milk in the microwave (uneven heating/scalding hazard). Use under adult supervision.