I have a GoPro mounted on my kayaking helmet that is bombproof, even when I'm exploring the underside of raging whitewater. This hit didn't feel too hard, but it ripped the mount off my helmet. So glad I found it the next run. Still, GoPro makes the easiest-to-use helmet cams. The new HD is ridiculously clear. I'm sticking with the new chest-mount from here on out.