Package includes: 1 x chest strap mount, 1 x screw, 1 x quick release buckle Co-developed by TELESIN and DJI, innovative fashion design. Front & Back dual angle chest strap mount. Two quick release buckle, for both front and back shooting.Made of high quality comfortable and environment friendly material, Sandwich Cloth SBR, breathable absorbent, hydroscopic and fast dry. Grey lycra fabric, fashion and comfortable with great sweat absorption function.Compatible with most action cameras, GoPro Max, GoPro Hero 12/11/10/9/8/7/6/5, Hero Session, Insta360 One X2, One R, Go2, DJI Osmo Action, Action 2 and other small size action cameras. Note: There might be an error of 1-3 cm due to manual measurement, and slight color differences may occur as a result of varying lighting and monitor effects.