Dr. Brown's Anti-Colic Options+ Narrow Baby Bottle, 0m+ Level 1 Nipple - Baby Bottle to Reduce Colic (2 Pack), 4 oz Dr. Brown's Anti-Colic Options+ Narrow Baby Bottle features a 125ml/4oz capacity and a Level 1 Nipple suitable for babies aged 0 months and older. The bottle is made of BPA-Free plastic in a brown color, designed to reduce colic symptoms. Brand Dr. Brown's Color 4oz, Clear Material Type Free BPA Free Item Weight 2.8 Ounces Bottle Nipple Type Vented About this item ANTI-COLIC BABY BOTTLE. Anti-Colic internal vent system is clinically proven to reduce colic. Decreases spit-up, burping and gas. CONSISTENT FLOW RATE. Vacuum-free feeding is closest to breastfeeding and Dr. Brown?s silicone nipples provide a consistent flow so babies can feed at their own pace. PRESERVES NUTRIENTS. The anti-colic 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 Natural Flow Anti-Colic Options+ baby bottle works best with the internal vent system in place but can be removed as baby?s feeding develops ? no need to introduce a different bottle. SUSTAINABLE BABY BOTTLE. Dr. Brown?s Narrow bottle is designed to nourish through all of baby?s feeding stages and is recyclable. PLASTIC BANK COLLABORATION. Dr. Brown?s has collaborated with Plastic Bank to prevent ocean plastic and reduce their plastic footprint. Purchasing Dr. Brown?s baby bottles help toward their commitment to prevent 31 million plastic bottles from entering the ocean annually. Learn more at PlasticBank.com.