Opteka OPT-GPLWHB Head Mount Chin Belt for GoPro HERO4, HERO3+, HERO3 and HERO2 Digital Action Cameras Lets you wear all GoPro cameras on your head Adjustable chin belt prevents your GoPro camera from flying upward when doing strong motions Comfortable, fully-adjustable design fits on helmets, a cap or directly over your head Perfect mount for skiing, kayaking, biking, motocross, equestrian and other action sports Sticky strips on the inside of the straps provides additional grip