NEW IN BOX- Dr. Brown's Anticólicos options narrow baby bottle 4 pack. ANTI-COLIC BABY BOTTLE. Dr. Brown’s baby bottles are known for reducing colic, spit-up, burping, and gas, resulting in a more comfortable feeding experience for baby. CONSISTENT FLOW RATE. Vacuum-free feeding is closest to breastfeeding and Dr. Brown’s nipples provide a consistent flow so babies can feed at their own pace. PRESERVES NUTRIENTS. The anti-colic internal vent system is proven to help preserve bottle milk nutrients and aids in digestion for a better night’s sleep. BREASTFEEDING BOTTLE. 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. BOTTLE GROWS WITH BABY. Dr. Brown’s Options baby bottle works best with the vent system in place but can be removed as baby’s feeding developsno need to introduce a different bottle. SUSTAINABLE BABY BOTTLE. Dr. Brown’s bottle is designed to nourish through all of baby’s feeding stages and is recyclable. DISHWASHER SAFE. Safe for use in dishwasher (top rack only), electric and microwave sterilizers or boiling water.