The natural shaped silicone nipples from Comotomo minimizes nipple confusion for babies and allows an easier transition from breast feeding to bottle feeding. The fast flow nipples have three holes, which is ideal for 6+ months. Anti-colic venting ensures baby has a happy tummy by eliminating vacuum build up. Best of all it’s 100% free of BPA, PVC, Phthalate and Nitrosamine. To be used with Comotomo bottles.