Watched YouTube video to install. I find their sizes tend to be a 1/2 size to small, so I purchase a little larger (I have a 10 1/2 size foot, so I get the size 11 instead versus getting the size 10) and get the wider version also. But they run bigger than I expected. Now they do not even care to reply to my mails or answer my calls. Super soft and looked really well made, gutted I didn?t order a smaller size first time. He did decide to keep them though and just wears them by stepping on the heels and uses them as slip ons?? They are well made though, I would just suggest sizing up for better comfort. Medium was for like size 13-3 kids size so I think I?m get a large would be better Assembly took me maybe 30 - 40 mins. Ah si, le 7P non funzionano su XBOX. You can really get into the Jams you like with these working out they are awesome, on the bus, on the train, or if your fortunate enough on the plane.