- Philips Avent SCF633/27 silicone nipple with anti-colic system - Exclusive valve that helps keep air out of the baby's stomach - Clinically proven to reduce colic and discomfort during feeding - Easy latch that facilitates transition and natural sucking - Compatible only with Philips Avent Classic+ and anti-colic bottles - BPA free, ensuring safety and health - Medium flow suitable for babies from 3 months - Includes 2 nipples in each pack, easy to clean and resistant to daily use