The NUK Smooth Flow Control Nipple provides an innovative anti-colic solution for bottle-feeding. Its unique Y-cut design allows the baby to control the milk flow rate by adapting to their specific suction strength, ensuring a comfortable, colic-free experience. This Size 2 nipple is intended for babies aged 6 months and older. The nipple is shaped to mimic a mother's breast for a natural fit, and an integrated anti-colic air vent helps minimize gas and spit-up. Made from BPA-free silicone, these nipples are dishwasher-safe and compatible with all NUK bottles.