The anti-lock valve is designed to prevent the ingestion of air, helping to reduce irritability, regurgitation, and colic after feeding. The wide base comfortably accommodates the baby's lips by facilitating sucking. The relief rings thanks to their roughness offer a natural feel. The soft and elastic teat-hella facilitates the passage from the breast to the bottle and vice versa. Drop drop cap for maximum protection and hygiene Interchangeable physiological teddy bear Safe closure: no leakage Large opening: fast to fill and easy to clean Ergonomic bottle, practical for mom and baby