CoolBELL High Capacity Water Resistant Nylon 18.4 inch Laptop Backpack with USB Charging (Black) PREMIUM MATERIAL: This multifunctional backpack is made of water resistant Nylon. durable, smooth pullers and sealed zippers. ORGANIZED DESIGN: Three well arranged spacious compartments with shockproof padded sleeve with protector flap to carry a 18.4 inch Laptop. Can store documents, office accessories, clothings, short business trip necessities. The bag comes with an organizer for passport, keys, mobile and cards in card slots. One compartment carries a separate Tablet /Ipad sleeve and can also hold files and folders. Front pocket can hold wallet, glasses etc. Side pockets for folding umbrella and waterbottle etc. STORAGE: The total capacity of the bag is 38 liters; Weight: 1.48 Kg; Dimensions: 33 cms x 22 cms x 52 cms (LxWxH) USB FEATURE : External USB port with built-in charging cable enables convenient charging by connecting your power bank with your electronic devices. BACK DESIGN: Comfortable ergonomic back design with soft padding and breathable feature gives you maximum back support and enables proper airflow that prevents sweating..