I bought these goggles for my two daughters, because I finally wanted to get a dense model. At first everything was perfect, the glasses have stuck firmly and was prima komlett tight. However, this is now after several weeks of regular use no longer the case. My daughter has to adjust his glasses extremely tight, so she gets strong marks and the glasses uncomfortable to wear, tight it is unfortunately still not ... Too bad, I'll probably have to look for a model andreren ...