This "body" harness has a multitude of uses, intended for crew use in endurance racing (ChampCar, WRL, AER, etc) but you may find use for it anywhere from karting, snowmobiling, anything where you want a short cord, PTT and jumper to your Kenwood or Motorola plug! Only available in a female IMSA plug on the helmet side at this time.
Pictures show the crew jumper, a Stilo jumper and helmet.