I'm new to this forum and haven't read through this entire thread on commuting. So my apologies if this has been mentioned, but I take my work clothes (pants, shirts, briefs, socks) to a dry cleaner near my office so that I don't have to carry them on my 11 mile commute. I'm lucky in that my work attire is khakis or casual slacks and typically a polo shirt. (I leave belt and shoes at work, and coordinate so that everything goes with black shoes and black belt.) Sometimes I need to wear a suit and tie, and on those days I take the bus.