The advanced venting system minimizes air bubbles in the milk so baby swallows less air, reducing spit-up and burping.
NUK Smooth Flow Pro Anti-Colic Bottle. The NUK Smooth Flow Pro Anti-Colic Baby Bottle features an anti-colic venting system proven to reduce baby colic symptoms of gas, extensive crying, and reflux. The newborn bottle's unique nipple design allows baby to control the flow of milk with their suction strength, delivering comfortable, colic-free feeding.The NUK Smooth Flow Pro Anti-Colic Bottle has fewer pieces than the leading anti-colic bottle, so it's easier to prep, assemble, and clean.