DR Brown's Standard Insert (3-Pack)

Created by a physician, Dr. Brown's Natural Flow baby bottles feature 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. These replacement Vent Inserts are for use with Standard 4-ounce and 8-ounce Dr. Brown's Natural Flow baby bottles. These are the same exact pieces that come with each Dr. Brown's baby bottle and are meant to replace worn or lost inserts. These vent inserts are an integral part of the Dr. Brown's patented system.