Designed by a doctor in 1996 and patented in 1997, Dr. Brown’s Natural Flow® is the only baby bottle to feature an internal vent system that: helps preserve vitamins C, A, & E by minimizing oxidation of breastmilk and formula; provides positive-pressure vacuum-free feeding similar to breastfeeding; and helps reduce colic, spit-up, burping and gas by eliminating negative pressure and air bubbles.
Dr. Brown's bottles are made of BPA-free polypropylene plastic or BPA-free borosilicate glass. All components of the Dr. Brown's bottle, including the vent insert, vent reservoir, travel disk, nipple collar, and cap are also BPA-free polypropylene. The nipples are made of medical-grade silicone.
Dr. Brown’s Natural Flow® baby bottles have received numerous design awards and acclaim from the medical community. In fact, many of Dr. Brown's bottles go to hospitals, NICUs, and doctor offices. Most important, moms are talking and they’re sharing with excitement the improved feeding habits of their babies.