EL cuero puede rayarse facilmente They give a clear, audible sound. I?ve had a rather fickle back with several herniated discs for a couple of decades so comfort and stability are premier for me. They are wide enough to be comfortable and the strap across the instep keeps the shoe in place. We exchanged for a 10 and it was the perfect fit. I wish it had a phone slot but I just lean my phone against the wheel on the tray) and the drink holder was deeper and a little wider (cant fit a 20oz soda), it sits a little higher then Id hoped though, but overall it does whats intended. Ive never seen this feature on any other sound cards, especially internal factory sound cards. Love this case so much! Will wear some no-show socks which I have plenty of. 5 based on the shoe style and cut.