• Helps Reduce The Chance Of Colic, Spit-Up, Burping, Gas And Other Feeding Problems • No Vacuum Pressure, So Your Baby Can Feed At Will For Good Digestion • Preserves Bottle Milk Nutrients By Reducing Air Bubble Oxidation • Vent Provides A Breastfeeding-Like Experience And Helps Prevent Nipple Collapse • Vent Can Be Removed For The Convenience Of A Nipple-Vented Bottle • Bpa-Free