This is absolutely not what I was expecting. They are made out of a kind of satin matter and not of a sportfriendly matter. Moreover these pants are really short and only go to half of my calves. There are open on the side of the legs and are supposed to be closed by 2 buttons on the "ankle" (calves for me) area but they are impossible to close even tho I have extra skinny leg (I took a M, I usually wear a size s). I really don't recommend it.