Luxebell Adjustable Chest Harness Strap with J Hook for Gopro Hero 4, Session, Black, Silver, Hero+ Lcd, 3+, 3, 2, 1 Camera Chest Harness Mount- lets you capture your knees and skis on the slopes, or your bike frame and handlebars. Chest Harness Strap + Jhook Buckle + Long Screw. The Chest Harness Strap Belt and Vertical Surface J-Hook Buckle helps your Gopro camera to have a shooting and recording steadily on the chest. Used in bicycle and autocycle riding,sking boating, fishing,hiking,etg. Compatible with ALL HERO 4 3+ 3 2 1, and HD HERO Original Cameras.