Does your baby frequently suffer from colic, gas, burping? These Dr. Brown Options bottles may help. Proven to reduce colic, ease digestion issues and preserve nutrients, the internal vent systems in these bottles are innovative and removable - use the bottle with or without them. The nipple venting creates a paced flow, and provides a feeding experience similar to most nipple-vented bottles. Options bottles fit most breast pumps, and are BPA-free and made in the USA. The Power Of Choice: This innovative bottle effectively and efficiently covers all parents' needs. Dr. Brown's Options grows with the needs of your baby and offers healthy benefits whether your little one is experiencing feeding challenges or not. BPA-free.