Developed by a pediatric dentist to help prevent dental issues. Features a patented Suction-Free Air Channel, helping to reduce the suction and palatal pressure that can create dental issues such as cross bites. Soft, suction-release bulb spreads wider as baby sucks for low-pressure comfort, plus thin-stem design is minimally intrusive on baby's mouth. Made in the U.S.A. and BPA-free. Available in 6-12m sizes.