Meet the STUNTMAN 360 harness: a wearable system that lets you wear your GoPro on your shoulder, chest, or hip. It comes with adjustable straps to fit individuals 130lbs and up. You get a 360-degree ball joint to let you point your camera in any direction.
This shoulder/chest/hip harness is compatible with 360fly, Garmin, Nikon, and other action cameras. It has an adapter for mounting gimbals and other accessories.