This bike is great for local commuting and has served me well over the last 2 years. Its also, not TOO nice, so you can leave it on campus and not loose sleep.

The seat tube is 20". I'm 5'9" and the frame was a bit on the larger side though totally workable. The bike would probably fit someone 5'8" or taller.

I'm also happy to throw in the U lock for another $10