Your options have never been better with Dr. Browns Natural Flow Options+ Narrow Baby Bottle. From nipple to base, the Options+ Bottle makes for a comfortable feeding experience for baby. Starting at the top, each nipple is specially engineered to offer the same consistent, natural flow, so you and baby know what to expect in every feeding. The soft silicone nipple helps baby naturally latch while the anti-colic vent system lets baby feed without fuss. Together, they offer a reliable and trusted bottle feeding experience that makes Dr. Browns the #1 pediatrician recommended bottle in the U.S. But it doesn't stop there. The anti-colic internal vent system features an enhanced design to improve an already innovative feeding experience: Clinically proven to reduce colic. Decreases spit-up, burping, and gas. Shown to better preserve nutrients in breast milk and formula. Aids in digestion for a good nights sleep. Offers a flow rate that supports breastfeeding.