Product description Size: 2.5m Color: red, black, blue Material: nylon, plastic Package content: 2pcs backpack with anti-drop shoulder strap buckle 1.For Outdoor ActivitiesKeeps shoulder straps of your backpack securely in place and free your hands 2.Abundant Zipper Pulls black zipper tags are enough for your spare or replacement; Good quality and lightweight accessories which is handy and easy to use 3.Quick Release BuckleEach strap with a quick release buckle and easy to buckle and unbuckle 4.Universal DesignAdjustable length , compatible with most sizes 5.Extra FunctionYou can carry small accessories when you go out,Get an extra buckle