Nuk Nature Sense Plastic Bottle Silicone Nipple Size M, 6-18m The nipple has multiple tiny holes, which are designed to model the milk ducts of the breast and give a feeling of intimacy to your baby when he drinks, and especially a natural flow. The natural sensation during feeding facilitates the transition from breastfeeding to bottle feeding, offering pleasure to both you and your baby. • The multiple tiny holes, which are designed with a model of the breast, give an ideal, smooth and natural flow • Wide, flexible nipple base with extremely soft nipple tip, similar to the mother's nipple • The innovative anti-colic vent system helps prevent air ingestion • The high quality polypropylene (PP) bottle is durable to use and does not contain BPA • For children aged 6-18 months, M (6 tiny holes for milk formula), capacity 260 ml