The transition from bottle to independent drinking should also be completely natural. That‘s why the spout of the NUK for Nature learner bottle is particularly soft and has a wide lip rest. It goes without saying that it is also leakproof. In addition, there is the innovative NUK Temperature Control indicator, which changes from blue to white if the contents are too hot. Ideally, the liquid should have body temperature (37 °C = medium blue tone). This makes learning to drink even more relaxed.