Let us talk about Nike Air Force 1.In 1982, Nike released the Nike Air Force1 Mid, a pair of basketball shoes that featured a revolutionary technological innovation: a pocket of air in the heel for cushioning and support. The shoe, from the N.B.A. to the playground, with professionals like Moses Malone and Michael Cooper endorsing them and wearing them during games. That a Nike Air Force1 25th Anniversary was the best-selling athletic shoe last year reflects a change in an industry whose product is becoming valued more for its fashion relevance than for its performance.