• Vent inserts are exclusive for the standard 4 ounce and 8 ounce Dr Brownu0026#39;s natural flow baby bottles
    • n
  • They are meant to replace worn or lost inserts
    • n
  • These vent inserts are an integral part of the Dr Brownu0026#39;s patented internal venting system
    • n
  • Top rack, dishwasher safe
    • nThree replacement Vent Inserts 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.