Size:4 Ounce (4 Count) Your options have never been better with Dr. BrownÕs 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. BrownÕs the #1 pediatrician recommended bottle in the U.S. But it doesnÕt 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 nightÕs sleep Offers a flow rate that supports breastfeeding. ItÕs Good to Have Options+ Our bottles work best with the vent system in place Ð but itÕs great to have options when babyÕs feeding develops. Just remove the vent when you feel itÕs time Ð no need to introduce a different bottle. With the vent system removed, the feeding experience is similar to most nipple-vented bottles. Options+ Narrow fits most breast pumps. Dishwasher (top rack) and sterilizer safe. BPA free. 0m+.