Allows your baby to drink in a relaxed and natural way, resembling as closely as possible the feeling of breastfeeding. The nipple, which is adapted to the shape of the jaw, has a versatile and extremely gentle Soft zone region and improved air escape system colic Anti-Colic Air System. All these characteristics make it particularly dear to babies, as is suitable for infants combining breastfeeding using NUK New Classic bottles made from durable high quality.