Willss 360 Degrees Armlet Wrist Band Arm Shell Strap with Adapter Mount for Gopro HD Hero 4 3+ 3 2 Camera SJCAM SJ4000 SJ5000 SJ6000 Suitable for all kinds of curved surface and plane Powerful adhesive fixed to ensure safety Heating adhesive and the adhesive base can be separate from the fixed bracket to unload it Very suitable for surfboard, kayak and paddle surfing board, equipment for the boat deck Suitable for ideal requires a great deal of support activities