Gently used, no nipples attached. Color 4 Pack, 8oz, Clear Material Type Free BPA Free Capacity 250 Milliliters 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. 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. DISHWASHER SAFE. Safe for use in dishwasher (top rack only), electric and microwave sterilizers or boiling water. BPA Free.