Unfortunately there was in the description a meaningful indication of size, as M, L, XL, etc. can mean many things. I had now decided at random for the size M. In order to facilitate prospective buyers the choice of size, I have therefore made and uploaded a photo of the package.
Gr. M is conveniently located and yet not too tight at 39.5 cm. The first time, still wearing a little unusual, but I protected the savers in the first drop on his knees very well. After two hours of play will the saver in the popliteal fossa and around damp with sweat. During the game I did not bothersome. Let's see how it looks for the next Games and whether the saver survive a wash in the washing machine.