Less reflux means less fussing and more enjoyable feedings for parents and babies. Dr. Talbot’s Silicone Anti-Colic Bottle is made of soft silicone that is easy to squeeze, encouraging milk flow and assisting little ones during feeding. Dr. Talbot’s Silicone Anti-Colic Bottle has a venting system that draws air to the base of the bottle which helps reduce colic symptoms like wind, reflux, and fussing. The bottle features a Soft Flex Easy Latch Nipple designed to mimic mom’s nipple, encouraging latch-on. The nipples also have internal ridges that prevent the nipple from collapsing while baby is feeding. When feeding time is over, the bottle’s multi-part venting system can be fully removed for thorough cleaning. Sterilization is easy and convenient thanks to the bottle’s self-sterilizing system that uses only the bottle’s components, water, and a microwave. Age range: 0 months and up Bottle base is made of silicone