I'm not wearing my Denon D2000's outside, period. One I can't just throw these in my bag, two they seriously aren't built for outside (long cable, not too sturdy, big, etc.) and three why wear good full-sized cans when 90% of what you're going to hear is wind, traffic etc.?
For outside, I wear my Audio-Technica ATH-FC700's: study, foldable, short cable, noise-reducing, heavy on the bass (which you lose the quickest in surrounding noise). They are perfect
