What is the NUK anti-colic air system?
The valve is the heart of the NUK ANTI-COLIC AIR SYSTEM. It operates only during feeding, allowing a continual flow of air into the bottle to maintain a constant air pressure within. This prevents the swallowing of air which is thought to be a common cause of colic. The valve is located on the side of the NUK teat. On latex teats – it is an oblique slit. On silicone teats – it is a small disc in a indented area on the side.