it depends on what kind of air cushion you are. If you have to replace the Air and zoom by yourself, you can replace the punctured air cushion with the air cushion on the old shoes that you don't wear. If it leaks, it is the kind that can be seen outside, you can't change it.

In addition, Nike's monopoly can't be changed. Do it yourself completely. If it is newly produced in recent years, the uppers and soles will meet together.