Amazon.com : GoPro Original ACHMJ-301 3-8 Year Olds Kid's Junior Chesty Adjustable Chest Mount Harness with Vertical Quick Release Buckle and Thumb Screw for GoPro Hero 1, Hero 2, Hero 3, Hero
GoPro "Chesty" Chest Mount Harness [GOP-GCHM30-001] - HobbyTown