I contacted Keen directly and they replaced the boots with no problem and at no cost to me, so thats a big plus. Mounted this to my 29" XC MTB & directly to iPhone 6S (make sure to wipe phone surface with alcohol). Now if I can just keep track of it. it was very easy to install. ) I am quite happy with my purchase. However, after listening to music for about 2 minutes, the right channel began to randomly cut out. The only thing that keeps me from ?loving? this product is that the board looks plastic-like instead of like wood-no grain, no texture to speak of. These are very comfortable and the sound great for someone who isnt an insane audiophile. Sturdy controller and headset stand. My husband has worn Teva for many years and he recommended that I buy a size 10.