Ditto to acidfast7. Look at the videos of Amsterdam bike commuting. People wear suits and even long wool coats. They all ride hybrids/urban commuting bikes and no one rides like racing athletes. The point of commuting for them is to get from A to B, not a physical workout. I find changing clothing at work regularly a big hassle, so I usually ride in whatever attire I wear at work (fortunately one's upper body remains still during cycling; only the legs move ). How long is your commute, OP? If too long, summer heat would indeed be a problem, but then leaving your suit at work sounds a good idea. You can ride in a shirt, then put on the suit at work.