Reduces Colic

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Less Oxidation Helps Maintain Vitamins C, A u0026amp; E + Lipids

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Vacuum-Free Feeding Like Breastfeeding

nThe Dr. Brown Polypropylene Bottles is a set of 8 ounce natural flow baby bottles featuring a patented internal vent system that helps reduce colic spit-up burping and gas. The positive pressure design allows babies to feed comfortably because the vent system eliminates the air bubbles and vacuum. All parts are dishwasher safe.