I was tired of stacking everything in my train case and rotating materials as I use them. Luckily I had an extra. I know, you can quit laughing now. I am using their supplied charging plug which they recommend. This went together perfectly. Macht Spaß sich das anzusehen They seem to be wearing as well as other brands but this is the first Adidas I have worn. Honestly wish I could return them but I tried to give them a chance and wore them for several days. Probably would have kept home carpeting a lot cleaner. I can walk longer and farther in Fitflops than I can walking shoes.