Nike

7119.544 - 7140.834 Ben Gilbert

And we should say, for anybody who doesn't know, everything that you hear of now, the Air Max, the Air Jordan, the Air Force One, it is a literal air bag. Actually, it's a nitrogen bag that sits in the midsole. So think about the thing between the lower sole, the rubber on the bottom, and inside of the insole, basically the part of the shoe that you can't get to that's underneath your heel.