this heel strap is NOT comfortable! Dans le kit, seul les élastiques et les poignées/sangles sont utilisables pour faire du sport. This is extremely disappointing, Yes you can manually start and lower the tonearm into position but this defeats its major advertised purpose. I found them easy to set up and even easier to operate. So long it makes the wireless charging mat look stupid and useless because you can easily charge this to full in a few hours and it will last at least a weak with heavy usage. The highs could use a little work on these headphones. I had to load the card separately. Sturdy and well made! It pops for a few seconds for every song. The rubberized bottoms are very sturdy, I am able to go out for the mail with out worry of getting them wet.