The NUK Advanced Orthodontic bottle features an Advanced Orthodontic nipple and a glass-like, shatterproof design. The nipple helps support healthy oral development and features Soft Zone technology for greater comfort. Its unique venting system helps reduce colic, while its natural shape supports the combination of breast and bottle feeding. The drinking hole is on the top of the nipple to promote easier digestion. This set includes two ten-ounce bottles, complete with nipples, collars and caps.