TMC HR47 Front Chest Elastic Belt Shoulder Strap for GoPro HERO 3+ / 3 HD / AEE SD20 / SD21 - Black Compatible with GoPro Hero 3/2/1 Black Silver Platinum Edition with 3-way adjustment base 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. It can be adjusted to any shoulder or chest size therefore its easy and comfortable to wear. Includes one chest body strap & Adapter only Makes it easy to capture immersive video.