Advanced Anti-Colic system: anti-colic valve is designed to prevent from air swallowing, helping to reduce irritability, regurgitation and colic after feeding Silicone Mum Effect: The exclusive finishing makes the teat extra soft and more pleasant. Drip Proof cap: for maximum protection and hygiene Interchangeable physiological teat Safe closure ensures no leakag Wide opening: quick to fill and easy to clean Ergonomic bottle design