"This innovative bottle effectively and efficiently covers all parents' needs. Our bottles are known for reducing colic, spit-up, burping, and gas. Moms and dads prefer Dr.Brown's because they can help alleviate feeding issues for baby. It's yet another way we help babies experience happy feeding. Vitamins C, A, and E are critical for health in infancy. The Dr.Brown's vent system reduces air bubble oxidation to help preserve bottle milk nutrients. This is important because vitamins and lipids are fragile, and susceptible to nutrient loss."