After trying out several bottles, I finally stayed with NUK. First of all I had for my 1 1/2 year old always the Softtrinktüllen. They were also very popular, so you could chew it but nice. In order not constantly run out the bottles, so I have always bought later a spout, which goes haywire in the money over time. Now I have discovered that bottle and am extremely satisfied. Although the grommet shows bite marks, but you can put the child's bottle safely to bed, so that it can help themselves, because it is absolutely leak-proof. I am very excited and will have a second bottle for us and another buy for Kita. The only drawback is perhaps that the bottle can not be completely emptied, since the valve to a different height than the rest of the lid and so the liquid does not reach the valve by tilting the bottle from a certain filling level - is for me but not a reason for a deduction of points. Unconditional purchase recommendation for those who are tired of expiring infant bottles.