The solution for finicky breastfed babies! The Breastflow bottle simulates nursing more closely than anything we’ve tested. It eases the transition from bottle to breast, because it looks, feels, and works the same way. Proven to help prevent colic, so it’s a great anti-colic bottle for formula-fed babies, too. This complete Starter Set includes two 5 oz. bottles, two 9 oz. bottles, two slow flow nipples, two medium flow nipples, four milk storage covers, one snack/formula container, and a soft-bristle nipple and bottle brush. The only feeding system that uses suction and compression, just like breastfeeding! The difference: a unique nipple-within-nipple system that lets baby control the milk flow, reduces air intake, and positions the mouth and tongue the same way as nursing. Because it prevents nipple confusion, it’s ideal for moms who want to transition to bottle feeding, or who want to supplement nursing with an occasional bottle The short nipple facilitates latch-on, while the large surface area resembles Mommy’s breast. Silicone outside; polypropylene inside. Reduces colic! 88% of moms surveyed in an independent, in-home study reported that their baby experienced less gas, less spit-up, or less fussiness after feedings. The bottle’s contoured design makes it easier to hold, and the wide-neck design allows for easy filling and cleaning The covers are almost impossible to lose, because they snap to the bottle’s base Storage container holds cereal, snacks, or enough powdered formula to make an 8 oz. meal. And it snaps right onto the bottle for easy travel! Soft nylon cleaning brush (included) are gentle on nipples and prevent tearingBPA Free