I have a pair of the Nitro Sport Boots. Had them for about a year. Recently moved on to some Oxtars that are on newenough.com for sale right now. The nitros started to fall apart on me. It began with the velcro near the ankle coming apart from the boot itself, to recently the sole coming apart from the boot. I would walk around in them pretty often though, so they had alot of use in them. They are a size 10 I believe. I like my Oxtars so far. Much lighter weight, and feel more durable. They also seem to support my ankles better than the nitros did.