The Air Jordan 21 (XX1 or XXI) PE - White / Metallic Silver - Black - Taxi were released on November 4, 2006 and retailed for $150. They feature a white leather upper with black accents, as well as the adored taxi design on the outsole. They feature an interesting lace cover, which works as a flap. The extra high ankle cut is great for basketball, as they provide plenty of support around the ankle area.