Our anti-colic teat is made to feed continuously. Air is released from the baby's stomach and into the bottle. The ribbed texture lessens discomfort and feeding interruptions while preventing teat collapse. clinically demonstrated to lessen discomfort and colic* Two Medium Flow Teats, 3m + Our anti-colic valve is made to prevent air from entering your baby's stomach, which will lessen discomfort and colic. The teat's built-in valve flexes when your baby feeds, letting air enter the bottle and venting it toward the back to prevent vacuum buildup. It helps lessen colic and discomfort by keeping air in the bottle and out of the baby's stomach. The Avent Anti-colic bottle from Philips lessens fussing. Infants who were given Philips Avent Anti-colic bottles reported