The Pigeon Flexible Slim Neck Nipple (L) is designed for older babies to provide a natural and comfortable feeding experience. Made from soft, flexible materials that mimic breastfeeding, it helps ease the transition from breast to bottle. The slim neck fits most standard bottles. Equipped with Air Ventilation System (AVSTM) to reduce gas and colic risk. Made from BPA/BPS-free, safe, and durable materials for worry-free feeding.