Wmicro Head Hardness Belt Mount Strap with Chin Belt for GoPro HD Hero4 Hero3 Hero3+ Hero2 Hero With the design of adjustable chin belt,it helps to protect your GoPro camera from flying upward when doing strong motion. Light weight,convenient for you to capture immersive videos and pictures. Adjustable strap fits for different requirements of the users. Perfect for surfing,skiing,skateboarding,motorcycle etc. Material polycarbonate and nylon