Chest Mount Harness Chest Strap Chest Belt with J-hook for GoPro Hero 4,3,2,1 The only harness thats perfect for all your strenuous activities such as biking, motocross, equestrian, skiing and kayaking Fully adjustable to fit any chest size 100% compatible with all GoPro HERO Cameras Inclusive of: Chest Harness, Vertical Quick Release Buckle, Thumbscrew Made in premium quality