Take your time installing so that it is level and you will love the results. I also love that the materials keep my feet warm but still allows them to breathe, unlike cheaper brands with man made materials I have tried in the past. (I was convinced by the review that said the medium was much too small for a tiny girl but Im not sure that description was accurate, the medium really does seem like a medium to me) I will end up just taking the sides in a little so I can get that cinch. Heel not too high. ✅ Buena calidad de sonido, tanto de los auriculares (con ANC encendido) como del micrófono. I thought it would be more convenient. At first I thought it was a little bit filmsy but was fine after I got the shoes in. Very easy to put together and install on the receiver. The collars need to be spread to fit over the tube so repeatedly removing these doesnt seem to be a good idea. There’s sticker you have to peel off before using maybe to protect it from scratches.