[Note: The sliding buckle cannot adjust the length of the elastic band.] You can slide the slider to determine the bifurcation point or position of the elastic band, which can better hold different shaped items, but cannot adjust the length of the elastic band. [4-prong design] Each elastic band is composed of 4 small straps, and you can set the spacing of 4 small straps to better cover the object. And the four branches can exert pressure on the objects in multiple directions. [Rubber + Nylon] The elastic band is made of high-quality rubber and wrapped in nylon fabric. Good elasticity, good flexibility, not easy to deform and break. [Easy to carry] For daily life or long-distance travel, you can attach the luggage straps directly to the vehicle. It can also be packed in a backpack without taking up too much space.