Anti-Theft Waterproof 15 inch Laptop Backpack with USB Charging suitable for Men & Travelers Specifications: Water Repellent Fabric wear and durable with Wear-Resistant, Anti-Skid and Anti-Splashing 3 different colors to select Size is 33cm* 12cm* 44cm* Weight is approximately 0.78kg Material is Oxford cloth, Lining with Polyester The backpack contains a line for charging but does not contain batteries. You need to prepare a portable battery yourself. Item Type: BackpacksModel Number: SMT-GBInterior: Interior Compartment,Interior Key Chain Holder,Computer Interlayer,Cell Phone Pocket,Interior Zipper Pocket,Interior Slot PocketLining Material: PolyesterClosure Type: ZipperGender: MenCarrying System: Arcuate Shoulder StrapRain Cover: NoPattern Type: SolidBackpacks Type: SoftbackMain Material: NylonStyle: BusinessHandle/Strap Type: Soft HandleDecoration: NoneCapacity: 36-55 LitreExterior: NoneTechnics: ChargeableFeatures: Rechargeable Shoulder BagStyle: Leisure,Business,Travel,School,LaptopPopular element: Charging functionBackpack Usage: Daily Backpack,Travel BackpackColor: Purple,Black,GreyHandle/Strap Type: Soft HandleFeature: Anti-theftCapacity: 13/14/15.6 inches LaptopApplication: Men,Women,Unisex,StudentInterior: Computer Interlayer,Cell Phone Pocket,Money Pocket