More Natural Breathing Clinically Proven PreSterilized Liner Gently Collapses Like Moms Breast As Baby Feeds More Natural Breathing Clinically Proven PreSterilized Liner Gently Collapses Like Moms Breast As Baby Feeds AirFree Feeding To Help Reduce Colic Unique AntiColic Liner Gently Collapses As Baby Feeds Preventing Air Bubbles From Mixing With Milk Mimics Natural Breastfeeding By Simulating Same Suck Swallow And Breathe Patterns As Breastfeeding So Baby Breathes More Naturally During Feeding