Using Method Confused How to Use? How to use chest strap mount? Chest Strap + Surface J-Hook Buckle + Long Screw Bolt ,One size fits all. Recommended as a more immersive way to film than on the helmet Fit all Go pro Hero Cameras: Hero5, Hero5 session, Hero4, Hero3+, Hero3, Hero2, Hero1 and most action cameras Chest harness high quality with excellent texture. Adjustable Perfect for skiing, mountain biking, motocross, paddle sports, or any activity where a view of the action is desirable under the helmet. You'll have a more complete view of your arms, knees and sticks to skiing and handlebars when you go by bicycle or motorbike. Recommended as a more immersive way to film than from the hull ?Feature?:Comfortable, fully adjustable to fit a wide range of adult sizes. Chest circumference: 25-67 inches / Shoulder strap length: 18-54 inches.It allows you to install the gopro camera on your chest. The chest mount harness is fully adjustable to fit all sizes, making it easy to capture immersive video and photo footage from your chest. Perfect for skiing, moutain biking, motocross,paddle sports. Enjoy the excitement from first person view by using this chest harness,It is stable tool for taking wonderful video and photo in mountain hiking,cycling, skiing, snowboarding, snorkeling and other outdoor sports. The J-hook chest strap mount make it easy to take Video/photo in better angle. It is onvenient to use Compatible with Gopro hero 7 6 5 4 3 2 , SJCAM ,SJCAM,Sony, Xiaomi, XiaoYi Action Cameras Package: 1 x Chest mount harness, 1 x Thumbscrew ,1 x J-hook