THE CLOWNFISH Water Resistant Unisex 28 Litres laptop backpack with USB foldable customized school backpack(Black)PREMIUM MATERIAL: This multifunctional bag is made of Water Repellent Nylon material to protect your goods from water. For the inner lining, soft feel polyester is used. The hardware such as strengthened hooks, zippers and buckles used are wear resistant, smooth, of and durable.LARGE CAPACITY : Comes with 2 compartments with one separate laptop sleeve to hold 15.6 inch Laptop. Other compartment can hold clothings, camera, headphones, googles etc. Additional front zipper pockets with an organiser to store magazine, pens, key,music, cosmetic, pen, charger, powerbank, spectacles, passport, cable etc. Side pockets for water bottles,umbrella, wallet etc.USB FEATURE : With a built in USB charger outside and a built in charging cable ,this usb bag offers you a more convenient way to charge your electronic device anywhere. This backpack doesn't power itself,you need a power bank to charge itTROLLEY STRAP & CONVENIENCE : The insertible pull rod box design allows the bag to slide over the luggage handle for easy mobility during traveling. Comfortable airflow back ergonomics design with soft padding, gives you maximum back support. Breathable and adjustable shoulder straps with glasses hanging hook relieve the stress of shoulder and is convenient for a long journey.ONE YEAR WARRANTY: 1-year warranty on this bag against any manufacturing defects. Just keep your safe.