The backpack made by superior oxford cloth, high density waterproof dampproof, wear-resistant, built-in multilayer storage space, sorting is simple and convenient, multiple details such as anti-theft pocket, password lock, external USB port, night reflective brand sign and other practical designs, improve travel safety.Features:Dual zipper design, high hardness, anti-rust and fading.20-35L large capacity main pocket, multilayer storage space.Superior oxford cloth, waterproof, wear-resistant, breathable.Back invisible pocket and password lock dual anti-theft design.External USB port, reduce the charge limit of space, free hands.Included raincover, multiple protection, waterproof dampproof.S-shape widen shoulder straps, adjustable length and release pressure.Three-dimensional breathable pressure relief load, high elasticity.Specifications:Brand: ozukoColor: Black, Dark Blue, Gray, Camouflage, Brown (optional)Open Way: ZipperHardness: MediumShoulder Straps: 2Capacity: 20-35LApplicable Gender: Male, FemalePattern: Pure ColorPack Shape: Vertical Type SquareMaterial: Oxford ClothFunction: Breathable, Waterproof, Wear-Resistant, Anti-Theft, ShockproofRaincover: YesPackage Weight: 1200g / 42.33ouncesPackage Size: 480 * 280 * 130mm / 18.90 * 11.02 * 5.12inPacking List:1 * Backpack1 * Raincover