GoPro The Strap (Hand + Wrist + Arm + Leg Mount)  

Product description

Strap your GoPro to your hand, wrist, arm or leg to capture hands-free ultra immersive POV footage, 

one-of-a-kind selfies and more. Includes an extended strap that fits around your arm, leg or larger objects. 

Features 360 Degree rotation and tilt that let you adjust your capture angle on the fly.