MAM anti-colic bottles can help newborns with feeding time. These bottles feature a vented base to reduce colic in most babies. The MAM bottles are self-sterilizing, and can be easily cleaned. Made from BPS and BPA free materials, the slow flow silicone nipple is accepted by almost all babies. These bottles feature clear measurement markings with cute star and seal designs. Overall, these anti-colic bottles can make feeding time much easier.