I dont know if thats from me wearing the Birks more or if there is just less arch support in these. Im certain Ive spent more time trying to get the dock to function that I have actually using the device as it was meant. Rope itself seems of decent quality. The integrated steel security cord is almost double the length of the old one and has 2 locks. So far I?ve had no issues and they seem to hold up well. she wears them probably twice weekly and plays in them in controlled environments, not outdoors. They block external noise better. I defiantly would have fit a medium. Esto es bueno, si lo compras para ir por ejemplo en bici, pero también tiene sus inconvenientes. You can charge with the base, or plug the headset into a USB port.