High quality washing process Waterproof nylon fabric appearance size: width 32cm * height 41cm * main bag capacity thickness 13cm, total capacity thickness 18cm bag weight: 0.42kg structure: front 2-layer zipper bag main Bag: 1 inner computer compartment; 2 open pockets the second layer zipper bag: (This layer is the main bag) 1 zipper pocket and 2 open pockets; on both sides: 555ML plastic bottles or sports kettles are packed on both sides; back: 1 zipper bag medium regular size backpack, lightweight Waterproof fabric, zipper pocket on the back, shoulder bandwidth lily J128-1 space J160 thin Strip 258 pea J195-2