The anti-colic valve is is manufactured in Italy and designed to fit the Natursutten baby bottle perfectly. The carefully developed double-valve provides the best flow for baby to prevent stomach pain and gas. Just place the nipple inside the ring/thread and the double-valve inside the nipple, tip up! All Natursutten products are free from harmful chemicals and in compliance with European standards of quality and security ref. EN14350 and CPSIA Contains 2 anti colic double valves, PP Size: Fits Natursutten Bottles(all sizes).
