The helmet has to be made for a bad impression on me, processing seemed good design also corresponds to the image, so appealing, even delivery within 2 days. However, my helmet ordered was too small. If in the size description S / M is, I assume that you get a helmet that is also adaptable to the respective head size of S and M. For size S / M that would be for me (I head circumference M) that the helmet just fits for size M. However, standing on top of my helmet already been ended right size S, which made me suspect already that he was too small. So please when sending items Size S also in the description See here at Amazon size S and no lottery S or M, you will be surprised. Because so gabs with return shipping costs that you also have to pay even more beautiful 10Euro for nothing ...