*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: Your options have never been better! From nipple to base, the Dr. Brown’s™ Options+™ Wide-Neck Glass Bottle offers a more natural bottle-feeding experience and eases the transition from breast to bottle and back again. The breast-like shape encourages a proper latch for a more natural bottle-feeding experience. Designed alongside medical professionals, the correctly contoured nipple shape and high-grade, soft silicone offer a more comfortable feeding experience and help to avoid nipple confusion. Pharmaceutical-grade borosilicate glass is heat and thermal shock-resistant, withstanding hot, cold, and gradual temperature changes. 2-pack 5 oz capacity  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 Imported.