Features: brand new and high quality Single universal size, adjustable clamp fixing position Nylon fixing belt and polycarbonate material clamp design The back of the fixing belt is anti-slip design, which is more reliable when it is in contact with the skin. High-quality equipment for cycling and other extreme sports photography. It is more stable and safer to use a fixed phone clip. Using other adapters is not as stable and can cause damage to the device. It is safer and more assured to have phone network for protection. The phone clip can also expand other equipment, such as fill light, microphone. High-quality lock buckle, chest strap design is more suitable for human body structure, more comfortable to wear. Suitable for most phones and action cameras on the market. Specifications: Material: Polycarbonate+Nylon Applicable Models: For Hero 10/9/8/7/6/5/4/3+/3/2/1, Xiaoyi, Mountain Dog, Osmo Pocket Camera, Osmo Action and other action cameras. Package Includes: 1x Chest Strap 1x Mobile Phone Clip 1x Mobile Phone Silicone Cover 1x J-shaped Base 1x Long Screw note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.