The â€œChestyâ€� is fully adjustable to fit all sizes. Makes it easy to capture immersive video and photo footage from, wellâ€¦your chest. Perfect for skiing, mountain biking, motocross, paddle sports, or any activity where you want to get a â€œlower than the helmetâ€� view of the action. See more of your arms, knees poles, and skis while skiingâ€¦or your arms and handlebars while biking or riding your motorcycle. Recommended as a more immersive way to film than on the helmet.