After wearing them for a few hours, I had a blister on my little toe. Ive been using it for the past 2 weeks, and its working very well for me. The second one did connect to the PlayStation immediately however the primary light instantly started to flicker so we left it plugged into charge. On that note, you would have to upgrade, not replace, this product as it seems to have been built to last. Insole comes out for cleaning/rinsing. The quality is high, installation super easy- they even throw in a drill bit to make a perfect sized hole. I have to be careful that the item I hang on one of the hooks doesn?t take the rack with it and dislodge off the screws when I am taking it off the hook (ie. I like to listen to podcasts or Audible books while on long car rides, and I usually put one headphone in to listen so that I dont bother my passengers. If you found my review helpful, I would appreciate you clicking ?helpful? - thanks! Big plus!