If you are looking for indestructable for a 700c rim Sun makes a Rhyno-lite in that size. That is what is on my tourer/commuter. These things are indestructable. When I was out road riding a few weeks ago I was looking behind myself to see where my friend was and when I looked forward I was going into the ditch. I didn't have my hands near the brakes so I just road it out in the ditch and hit a road that was going over the ditch and thought I was toast. But instead of wrecking I just hit it hard and jumped it very ungracefully. I thought for sure my rims would be toast. But they weren't even untrued! I was going at least 15mph. I'm still pretty shocked. That's my .02$