Product features: 1. Excellent choice for shooting VLOG: the mobile phone can be placed horizontally and vertically, the design of J-hook and long screw can make the mobile phone rotate 90, the size of this shoulder strap can be easily adjusted, even the biggest winter jacket will fit, Suitable for all body types. 2. Quick Release: The smartphone chest strap holder with J-hook can easily install and remove your phone, even can be removed in a second. Very convenient. 3. Stable structure: There are two non-slip rubber pads on the bottom and top of the phone holder; when you use the provided mini wrench to fix the long screw to the J-hook, the phone clip will conform to the angle you adjust, stable shooting, will not slide. 4. Multipurpose: Suitable for mountain biking, skiing, snowboarding, motocross, paddle sports, cliff diving water skiing and other action sports, not suitable for running or high-intensity activities. 5. Size: 20*14*6cm - Good after-sales service: If you have any other questions about our products, please feel free to contact us. We are happy to provide you with the best solution within 24 hours. -Package list: 1*Chest strap 1*J type seat 1*Adapter 1*Screw 1*Mobile phone holder