Week 2 of Air Jordan XX8 (28) Days of Flight ends with a look at the Air Jordan XXI (21).

The XXI ushered in a new era of customization with the availability of zoom and encapsulated air IPS systems.

The first Air Jordan of its kind with interchangeable cushioning units, the Air Jordan XXI was worn by the such Jordan Brand athletes as Ray Allen, Quentin Richardson, and Eddie Jones. It was also a model that would follow up with a low-cut version.

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