Features: Allows you to wear action camera on your chest, free your hands, and must-have for boaters, skiers, horseback riders, skydivers and so on. Elastic designed, fully adjustable, fit chest circumference range 70-150cm/27.5-59inch. Can shooting at different angles, widely used in skiing, cycling cross-country, hiking, snowboarding, snorkeling, rowing and other outdoor sport, recording the wonderful moment. Quality material, comfortable, high elasticity, moisture absorption and quick drying. Magnetic base, double buckle, fast and convenient to wear, stable and not easy to fall off. Wide compatibility, for Hero 9 8 7 6 5 4 3 Session/360 OneX2, SJCAM and more sport cameras. Specifications: Material: Nylon/Leica-material Color: Black Gray Type: XD1, XD2, XD3, XD4, XD5(optional) Size: Approx. 340~560x210mm/13.38~22.04x8.26inch Fit Chest Circumference: 70-150cm/27.5-59inch Applicable Model: for Hero 11 10 9 8 7 Series/Sjcam/Yi4K and more Note: Please allow 0-1cm error due to manual measurement. make sure you do not mind before you order. Please allow slight chromatic aberration due to different display resolutions. Package includes: 1x Chest Mount Harness Kit