The Comotomo bottle is a revolutionary bottle designed to imitate natural breastfeeding down to the softness and texture. The natural shaped silicone nipples minimize nipple confusion for babies and allows an easier transition from breast feeding to bottle feeding. The Scratch resistant medical grade silicone will not harbor bacteria and the wide-neck design lets it be cleaned quick and easy. 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. The slow flow nipples have one hole and are recommended for 0-3 months.