Designed to:. Reduce colic spit-up burping and gas. Prevent air bubbles from forming in milk or formula. Help reduce fluid in the ear. Prevent nipple collapse. The Dr. Brown's Natural Flow BPA free baby bottle is the only baby bottle that features a patented internal vent system. This vent eliminates the air bubbles and vacuum effect to allow positive-pressure feeding with no air - similar to breast-feeding
Customer reviews for Dr. Brown's Natural Flow BPA Free Polypropylene Bottle -- 8 oz
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