Somewhere at the intersection of sweatsuits, neoprene, and fleece, Nike Tech Pack is some of the sickest, cleanest workout wear around. The Tech Pack collections inspire a glassy-eyed, breathless devotion you don't see very often in the exercise arena. Armed with inspiration from the Nike archives, each season of Tech Pack threatens to outpace the one that preceded it, slowly extending the reach of the Tech Pack cult. The AW '14 collection looks especially good, especially when it's worn by a succession of talented and attractive athletes, as it is in the feel-good ad embedded above. Soon, we're all going to be wearing immaculately constructed Nike Butterfly and Windrunner IRD jackets, and we're going to look amazing.