These athletic sneakers feature springy ZoomX foam that stacks on a full-length Air Zoom unit to give you responsive cushioning. A crash pad at the instep helps hold your foot in place. ZoomX foam conforms to the natural shape of your foot to give you soft cushioning without weighing you down. The built-in sidewall cupsole helps provide stability during lateral movements and allows for full engagement of the underfoot cushioning. The Air Jordan XXXIX basketball shoes have a lace up fastening.