Features:_x000D_1 Compatible with Action 2GoPro series360 One RRS and other action cameras _x000D_2 The 3-position adjustable buckle can be securely fastened to backpack straps of different thicknesses _x000D_3 Easy to install, hands-free, easier to shoot _x000D_4 Compatible backpack strap thickness: 2mm, 12mm_x000D_5 Compatible backpack strap width: 67mm_x000D_Notice:_x000D_Actual color may be slightly different from the image due to different monitor and light effect _x000D_Please allow 1-3cm deviation due to manual measurement _x000D_Description:_x000D_Material: plastic, silicone_x000D_Size: 4 2*9 8*4 5cm_x000D_ColorStyle: As the picture shown_x000D_Weight: 66gPackage List:_x000D_1 x Shoulder Strap Mountonly