Features: -Comfortable, fully adjustable design fits all sizes. -Made of high-quality elastic nylon and ABS buckle, strong and durable. -Be hands-free, capture the footage without holding the camera in your hands -Easily removable, simply loosen the thumb screws to adjust the angle or swivel up or down 90 Degrees to quickly view or edit your footage. -Perfect for skiing, cycling, canoe and more other sports activities use. Specification: Colour: black Material: nylon+ABS Suitable for device size：4-7 inches Package Included: 1x Chest mount strap 1x J hook 1x Adapter 1x Screw 1x Phone holder .