Dr Brown's Options+ Narrow Neck Baby Feeding Bottle Starter Kit Your options have never been better with Dr. Browns Natural Flow Options+ Baby Bottle. From nipple to base, the Options+ Bottle makes for a comfortable feeding experience for baby. Its Great to Have Options+ Our bottles work best with the vent system in place but its great to have options when babys feeding develops. Just remove the vent when you feel its time no need to introduce a different bottle. Our bottle nipples feature their own venting system that offers a feeding experience similar to most nipple-vented bottles. 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. 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. Some mums and dads find removing the vent a convenient option as their baby's feeding becomes more developed Provides a feeding experience similar to most nipple-vented bottles What are Dr Brown's bottles made of? Our Dr Brown's bottles are made of BPA-free polypropylene plastic or BPA-free borosilicate glass. All components of the Dr Brown's bottle, including the vent insert, vent reservoir, travel disk, teat collar, and cap are also BPA-free. Our teats are made of medical-grade silicone. Printed ink on bottles is made from non-toxic food grade material. Package Includes: 2 x 8oz/250 ml bottles 1 x 4oz/120 ml bottle 2 x L2 Nipples 1 x Cleaning Brush