Item Type: Chest Mount Harness Strap Material: ABS Mobile Phone Holder Can Hold the Range: 5.5-10cm / 2.2-3.9in Package List 1 x Chest Strap 1 x Phone Holder 1 x Screw 1 x Adapter 1 x J Shape Mount Manual measurement, please allow slight error 1[Adjustable Design] Elastic stretchable chest strap can be freely adjusted, and it is comfortable to wear the camera on the chest. With detachable stand, you can place smartphone horizontally and vertically. 2[Free Hands] Chest mount harness strap frees hands, supports phone shooting with a width of 5.510cm / 2.23.9in, unlimited creativity, shooting immersive videos and photos from the chest angle. 3[Immersive Shooting] Cellphone chest harness strap is a more immersive way of shooting than fixing a camera to a helmet, providing an immersive experience, and it is also highly regarded. 4[Applicable Model] Not only for smartphone, but also for action cameras such as for Hero5 / 4/4 session / 3 + / 3/2/1, for LEVIN, for MUSON, for DJI Osmo Action, for SJCAM, for DBPOWER, etc. 5[Widely Used] For surfing, skiing, skateboarding, biking, motorcycle, and any other sport from an "under the helmet" perspective, when skiing, you can shoot your arms, knees, ski poles, and snowboards, while riding or on a bike or motorcycle, you can shoot your arms and handlebars.