Dr Brown’s wide neck bottle provide far much better options from nipple to base, the Dr. Brown’s™ Options+™ Wide-Neck Bottle offers a more natural bottle-feeding experience and eases the transition from breast to bottle and back again.The anti-colic internal vent system features an enhanced design to improve an already innovative feeding experience. The fully-vented bottle is clinically proven to reduce colic, better preserves nutrients, aids in digestion for a good night’s sleep, and provides a flow rate that supports breastfeeding. Dr. Brown’s™ Options+™ Wide-Neck Bottle BPA free, dishwasher (top rack) and sterilizer safe.