Created to match Andre Agassi's daring court style, the Nike Air Tech Challenge II 3/4 is a bold sneaker intended for rigorous play. This 'Ace' edition—debuted in 1989—is an homage to the ad campaigns that surrounded the launch. Its layered upper is met with a TPU cage, neoprene tongue and contrast Swooshes. A falling pixel graphic fills the sidewall windows. The Air-injected midsole and color-pop outsole round out the tribute.