1 Adjustable Chest Harness; 1 Vertical Surface ''J-Hook'' Buckle; One size fits all adjustability.; Compatible with all GoPro quick-release cameras.; Warranty: 1 Year; Makes it easy to capture immersive video and photo footage from, well, your chest. Perfect for skiing, mountain biking, motocross, paddle sports, or any activity where you want to get a ''lower than the helmet'' view of the action :: Unisex > iPod Accessories Size: one size.