This GoPro Adjustable Head Strap Mount Belt for GoPro Hero 1, Hero 2, Hero 3, Hero 3 / Hero 3 Plus and Hero 4 Camera - Black is fully adjustable to fit all sizes. The head strap can be worn directly on your head to capture footage from a headlamp-like POV perspective. The head belt is compatible with all GoPro cameras and great for keeping the footage clear while you shred. It is not recommended for high-impact sports, only recommended for non-impact activities.