The Nike Air Max 720 is setting Nike history with the size of the air bubble. The sneaker uses a mesh upper and boast a full-length lifestyle Air Max unit. Mesh Upper The shoe’s predecessor, the 270, registered at 32mm high. The 720 ups the Air ante to 38mm. The 720 is the first full-length lifestyle Air Max unit The name 720 comes from the idea that the Air unit is visible in 360 degrees, both horizontally and vertically.