With Dr. Brown's wide-neck bottle with natural flow choices+, your options have never been better. The options+ wide-neck bottle eases the transition from breastfeeding to bottle feeding and back again by providing comfort for baby from nipple to base. Each nipple, starting at the top, is specifically designed to give the same steady, natural flow, so you and your baby know what to anticipate with every feeding. Perfect for transferring from breast to bottle and back again, the new breast-like nipple shape is precisely designed for a proper latch and a more natural bottle feeding experience. Baby feeds without complaint thanks to the internal vent mechanism that prevents colic.