Air Max 720 ISPA [2019]In 2019, Nike's experimental ISPA division took the already wild Air Max 720, featuring the biggest bubble ever seen on a Nike shoe, and made it even crazier. They took design cues from the inaugural ISPA React Runner Mid, these cues can clearly be seen on the midsole, where injection moulded plastic components were implemented possibly to add support. The 720 ISPA also came with removable plastic components that clip on to the heel this pair comes