The Dr. Brown's Nipples anti colic level 2 are designed specifically for newborns, suitable from 0 months. These slow-flow nipples are made of silicone and are part of a bottle set with a narrow neck, making them easy to handle and lessen the risk of colic. The bottles are dishwasher safe for convenience and made from BPA-free plastic, ensuring safety for your baby's feeding needs. This product is a practical choice for parents looking to ease their baby's feeding experience.