The Infrared is the most sought after color in the Air Max 90 line. Other famous colorways include the Limes, Crepes, and the Pythons. A while back, Nike released a "History of the Air Max" packages, and of course the Air Max 90 was included. Also, the Air Max 90's are now available at NikeID. The Air Max 90 is a classic shoe that has become very popular among sneakrheads.
