Introducing Dr. Brown’s Options+ Bottles: the first convertible baby bottles on the market that can be used with or without the vent system. The new vent system is designed to grow with your baby, and we recommend using it to experience all the health benefits of the bottle. It helps reduce feeding issues, supports digestion, and helps preserve vitamins. Some parents may prefer to remove the vent system as their baby’s feeding abilities develop. The vent system ensures a consistent milk flow and provides a feeding experience similar to most vented nipple bottles. Dr. Brown’s Options+ baby bottles are compatible with most breast pumps and are BPA-free.