Brown's Preemie Baby Bottles feature our slowest-flow nipple, the Dr.
Features:Featuring our slowest-flow nipple, the Dr. An enhanced, anti-colic internal vent system features innovative feeding experience that's clinically proven to reduce colic, decreases spit-up, burping and gas, better preserves nutrients in breast milk and formula, and aids in digestion for a good night's sleep. Together with the Preemie Flow Nipples, the Options+ Narrow Preemie Bottle offers a flow rate that supports breastfeeding.