<p>- 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.<br><br>- Dr. Brown’s Glass bottles are heat and thermal shock-resistant, which can withstand hot and cold temperatures, along with gradual temperature changes.<br><br>- Anti-Colic vent system is clinically proven to reduce colic. Decreases spit-up, burping and gas<br><br>- Breast-like nipple shape encourages a proper latch and provides a consistent flow so babies feed at their own pace<br><br>- Comes with Level 1 Slow Flow Nipple, 0m+<br><br>- Safe for use in dishwasher (top rack only), electric and microwave sterilizers or boiling water<br><br>- BPA free</p> <p>Your options have never been better with Dr. Brown’s Natural Flow Anti-Colic Options+ Wide-Neck Glass Baby Bottle. The anti-colic internal vent system is clinically proven to reduce colic. Dr. Brown’s bottles provide a more comfortable feeding experience for baby by decreasing spit-up, burping and gas.</p> <p>Store in a cool and dry place</p> <p>USA</p>