I am completely satisfied with the union! They fit perfectly and do not slip! (Have size 44.5 and have the piece ordered in L, also have large calves) They are also reinforced bottom. ie thicker fabric on the feet, which the wearing comfort is erhöhrt. Furthemore I find thus a better grip in the shoe, since they more closely concerns! Disadvantages: The fabric at the calf seems to me very very thin, but does not bother me. And you have to read the size in the reviews. But that should not be a problem nowadays, yes! ;)
In my opinion, a buy recommendation! If I need to buy new these definitely go back!