Specification :

The Nike Air Max shoe uses a large air cushioning unit at the heel which is visible from the side of the midsole in most models. Different types of Air Max cushioning include "Air Max2" "Tube Air" , "Total Air" , "Tuned Air," . Air in the early 1990s which was visible through the bottom of the shoe (although smaller portions of Air units are visible through the bottom of many Air Max models) and another type of Air cushioning is the low profile and very responsive "Zoom Air." www.nikesair.com have many new styles of air max.also the max 2009.