Jordan 'Why Not?' Zer0.4Jordan 'Why Not?' Zer0. 4Basketball ShoeWHY NOT? Speed is Russell Westbrooks not so secret weapon. He out hustles the competition, building momentum and muscling his way onto the highlight reel. Cue the Jordan 'Why Not?' Zer0. 4, the first to feature double stacked Zoom in the forefoot. It's an extra responsive cushioning system that's designed to help him transform his speed into force and focus his attack. Double Stacked Attack2 stacked Air Zoom