Nuk First Choice Open-close System

Open and close with a single twist. The nuk open & close system is installed instead of the standard disk in baby bottles. Thus, it provides convenience in the baby's daily routine. The nuk open & close system is attached between the first choice bottles and the bottle nipple. it is ideal for carrying outside without dripping. It is fully compatible with the nuk first choice system. It is very easy to clean. it does not contain bpa - it is made of polypropylene and tpe. It cuts or opens the flow with a single move. there is no lid. it is 100% leak-proof.