The Philips Avent Anti-Colic Bottle is designed to reduce colic and discomfort with its unique anti-colic valve system. It features a leak-free design, is easy to clean and assemble, and is made from BPA-free materials. Suitable for babies 3 months and older, it supports a smooth transition from breastfeeding to bottle feeding. Key Features Clinically proven to reduce colic and discomfort Anti-colic valve designed to keep air away from baby's tummy Easy to clean and assemble BPA free material Compatible with breastfeeding to cup Leak-free design Wide neck for easy cleaning Ergonomic shape Dishwasher & microwave safe Ribbed texture prevents nipple collapse Key Materials: Bottle made of Polypropylene (PP) (BPA free); Silicone anti colic teat.Experts in baby care essentials known for clinically proven anti-colic bottles.Before Use: Sterilize all parts. Assemble the anti-colic valve system and teat. Fill with prepared milk/formula.Inspect bottle and teat regularly. Never warm milk in the microwave (uneven heating/scalding hazard). Use under adult supervision.