In the football-like game, two teams compete against each other, put their upper body in the inflated balls. So human bumper cars with fall, strong impact and rollovers. The chest strap has held in connection with a GoPro Hero3 + perfect. On the inner side of the stretchable bands a light gum is to avoid slipping. Individually, you can adjust the bracket to the respective torso. Wearing has very pleasant felt even with only a T-shirt, without much padding between the belt and your body.