He repaired two spots and later the same day, several more came loose. En todo caso, creo que buscaré una cuerda trenzada, en vez de torcida, para evitar que puedan darse este tipo de problemas. Ive been trying to wear them periodically, in hopes that Id break them in, but no luck. And then a couple days ago, it just stopped working period. The only thing is that it felt a little too large. I cannot attest to the durability of the soles. I want to order a size 11. I was worried about the noise level but to be honest it?s fine, I notice when you first start it?s more noisy but gets better iI bought these to take on a trip to Mexico so Id have some support other than flip flops. I use them maybe 4 or 5 days a week and the battery has lasted me a few weeks at a time. As I paid $27 for the shoes, it is not worth the return postage to send back, but I will probably only be able to wear these to go get the mail.