The chesty is very easy to use. You attach your GoPro to the mount with the screws and the waterproof case so it is in tact and stays where you want it to be. Then you strap it onto your body. If the mount is too loose or too tight you can take off the mount and then tighten them or loosen them accordingly. The footage is pretty stable for the most part so when you collect your footage it doesn’t give you a headache when you watch it.