Dr. Brown\'s Natural Flow AccuFeed Bottle System helps you precisely feed your little one. Used in hospitals and Neonatal Intensive Care Units (NICU), the Accufeed bottle features easy-to-read raised graduated markings from 5 cc to 60 cc for more exact measuring and comes with Preemie Flow and Level T Narrow Nipples. Level T Nipples are designed for babies requiring a slower flow nipple than Dr. Brown\'s Level 1 Nipple or needing to transition up slowly from Dr. Brown\'s Preemie Flow Nipple. The AccuFeed bottle is compatible with all of Dr. Brown\'s Narrow Nipple levels. The anti-colic internal vent system is clinically proven to reduce colic. Dr. Brown\'s bottles provide a more comfortable feeding experience for baby by decreasing spit-up, burping, and gas. This vacuum-free feeding is closest to breastfeeding and Dr. Brown\'s silicone nipples provide a consistent flow so baby can feed at their own pace. The breast-like nipple shape encourages a proper latch for a more natural bottle feeding experience and eases the transition from breast to bottle and back again. Dr. Brown\'s vent system is proven to help preserve bottle milk nutrients and aids in digestion for a better night\'s sleep. The silicone nipple, together with the internal vent system, offer a reliable and trusted bottle feeding experience that makes Dr. Brown\'s the 1 Pediatrician Recommended Baby Bottle in the U.S.* Safe for use in dishwasher (top rack only), electric and microwave sterilizers, or boiling water. BPA Free. Dr. Brown\'s Medical AccuFeed Bottle System Includes: 3x 60 cc Baby Bottles, 3x Level T Silicone Nipples, 3x Travel/Storage Caps, and 3x Cleaning Brushes. *IQVIA Health ProVoice Survey 2023 Always use vent system with Preemie Flow Nipples. Important: Consult your health care provider before using the Dr. Brown\'s Accufeed Bottle System to confirm this bottle is recommended for your baby\'s feeding challenge.