The Air Jordan 21 (XX1 or XXI) - White / Metallic Silver - Black were released on June 3, 2006 and retailed for $180. They feature a simple all white leather upper, and may seem bland at first glance, but the technology behind them definitely make up for whatever they lack in looks. They feature a double-overlasted phylon midsole supporting four I.P.S.(Independent Podular Suspension) pods on the outsole.