It may not be the best looking bottle you’ve ever seen, but it was voted Best of 2015 Mom Picks on Baby Center. Dr. Browns Natural Flow Bottle, created by a physician, uses a patented 2-piece internal vent system for your baby’s comfort. The system is very similar to breastfeeding, it creates a positive-pressure flow for vacuum-free feeding, allowing formula or breast milk to flow freely without nipple collapse. The vent system keeps out air bubbles in the formula or milk, helping to reduce feeding problems like spit-up, colic, burping, and gas. Dr. Browns Nautral Flow Bottle Set comes with 3 8oz/240ml Standard bottles, 2 4oz/120ml Standard bottle, 2 extra Level-Two silicone nipples, 2 Storage/Travel caps and 3 “cleaning” brushes. This is a bottle that will satisfy both you and your baby!