Chicco Silicone Baby Bottle features an anti-colic valve that prevents air intake, reducing the risk of colic, hiccups and regurgitation. It has a wide base, specifically for the baby's mouth and small lips, facilitating sucking. The embossed rings on the base simulate the mother's breast. The soft and flexible teat facilitates the transition from breast to bottle and vice versa. silicone teat provides a comfortable sensation during sucking.