In 2008, Jordan Brand unveiled a collection of 'Countdown' packs, which cleverly combined contemporary designs with classic styles. One part of this pack showcased the Jordan 2 and the Jordan 21, the numbers of which added up to 23 as a tribute to Michael Jordan's iconic jersey number. The shoe boasted an array of upscale features, including a premium suede upper and a diamond quilted liner within the inner bootie system. Its midsole incorporated a ventilation system inspired by car grilles, while an Independent Podular System allowed wearers to choose between Zoom or Encapsulated Air.