CoolBELL Unisex Water Resistant Nylon 15.6 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: Two well arranged spaced compartments. One with soft cushioned sleeve to carry a 15.6 inch Laptop. Spacious enough to store documents and office accesories. Can store clothings and short business trip necessities. Another compartment comes with an organizer to hold mobile, passport, powerbank,etc. Front zip horizontal and vertical pockets can store diary, wallet or other necessary documents. Mesh side pockets for folding umbrella and waterbottle etc. STORAGE CAPACITY : The total capacity of the bag is 21liters; Weight: 900 grams; Dimensions: 31 cms x 15 cms x 45 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..