Made of superior plastic and nylon . Compatible for GoPro HD Hero 1/2/3/3+/4.xiaomi yi,SJ4000,SJ5000 Not included waterproof shell,housing case,Bracket Screw. Available in cars, dashboard or roof, boats, motorcycles with strong adsorption capacity. Awesome gopro accessories kit for swimming, rowing, surfing, skiing, climbing, running, bike riding, camping, diving, outing and any other outdoor sports. The adjustable head strap and chest strap are compatible with all GoPro cameras