I've lost a few shirts to holes in the left elbow due to learning elbows at desk at work. I seem to recall an old tailor once showing me some type of slip-on external elbow protector that could be ordered, it was round and hat an elastic band I think. Of course, at the time I thought it would just look stupid, but now that I've lost more shirts I'm willing to give it a try. Does anyone know where could get one online? My searches came up empty.