Pretty simple, it literally does not work. I ordered these with the bright orange back. However, I think it would do some stretching. The only extras provided are a catalog insert and DVD-accessible title list. the material they made these out of is weird. It is flimsy and so it cannot be moved with anything in it. ) I dont like cables. Overall these are pretty cool and work well for the price. then get them. The shoe is mostly mesh now and in a sport like Tennis or Pickleball you need more rigid support.