Dr. Brown's 4 oz Standard Polypropylene Bottles and Nipples
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The Dr. Brown's Natural Flow® baby bottle is safe and effective. It was invented by a doctor and tested on his own children when they were babies. The revolutionary Dr. Brown's baby bottles feature a patented "no vacuum" design with an innovative internal vent feature to prevent fluid in your baby's ears, and reduce colic, gas, spit up, air bubbles in formula and milk, and nipple collapse. Dr. Brown's baby bottles are BPA free.