Anti-colic valve designed to reduce colic and discomfort, a comfortable and contented feed for your baby Super soft silicone nipple is the same shape as mom's nursing nipple for a familiar fit Easy to combine breast and bottle feeding Natural latch on due to the wide breast shaped teat Ultra soft teat designed to mimic the feel of the breast Unique drinking hole on top side is positioned correctly Fully vented bottle design provides vacuum-free feeding Flexible spiral design combined with comfort petals, this bottle is BPA free Ergonomic shape for maximum comfort