Carrying system: It uses 15mm thickened 3D breathable mesh material 2mm soft cotton, with an overall thickness of 17mm; and the heat dissipation guide grooves are designed in the middle and on both sides, which can not only dissipate heat and ventilate,but also reduce the pressure on the entire back, making the entire riding experience more comfortable Chest Buckle: There is a magnetic buckle in the middle of the two shoulder straps on the chest, which fits the body better after tightening. By pulling the buckle puller, the backpack can be quickly released Multi-compartment design: The rich compartments inside the bag are equipped with a water bag compartment and a computer compartment, two independent net pockets, a water bag fixing magic tape and a key chain Powerful Molle Expansion System: The front of the bag is designed with a rich Molle system, which can meet the needs of a variety of external items Mount The Helmet Via Buckle: The motorcycle helmet can be mounted through the buckles on both sides of the bag body, and a rain cover is attached Specifications: Item No.: MX2005 Material: Polyester Weight: 1609g Size: 32cm*20cm*45cm (L*W*H)