*Returns not accepted on any opened, used, or defective product. Contact manufacturer directly for further defective products/parts.   From Dr. Brown's, these bottles feature: The soft silicone nipple helps baby naturally latch while the anti-colic vent system lets baby feed without fuss. Together, they offer a reliable and trusted bottle-feeding experience that makes Dr. Brown’s the #1 pediatrician recommended bottle in the U.S and a favorite of parents for over 20 years. 2-pack Clinically proven to reduce colic Decreases spit-up, burping, and gas Shown to better preserve nutrients in breast milk and formula Aids in digestion for a good night’s sleep Offers a flow rate that supports breastfeeding BPA free, dishwasher (top rack) and sterilizer safe 4oz. capacity  Imported. Dr. Brown's Options+™ Anti-Colic Narrow 4oz Glass Baby Bottles 2-Pack