It allows air to flow through while feeding
The air will flow easily through the air valve that made drinking and it flows continuously. The nipple doesn’t flat even though constantly suck.
The air can flow through the air valve at the base of the nipple. Thus, the baby does not swallow air while sucking. Parents do not worry about flatulence Indigestion in your children.
Reduce choking symptoms
Because the air can at the base of the nipple Causing Thereby
Pur brands characteristics can flow through the air valve that It do not make vacuum in the bottle. Hence, it is reducing the symptoms of choking which is one reason of colic.