The Future of Air The Nike Air Max 720, with Nike's largest Air insert yet, is all about cushioning and more. This model with a fantastic sole and molded upper combines the style of the future and rich shades from the natural world. The full-length 720 Air insert is Nike's largest Air insert to date. Colors inspired by the natural world contrast with futuristic design. Molded lines of the top, as if coming out of mesh overlays, form a wave-like structure.