1.   【Waterproof Material】 Our backpack is made of waterproof and durable polyester, equipped with a metal zipper, which has good breathability and heat dissipation.                   Two padded shoulder straps are light to carry, and can enhance strength, reduce shoulder pressure, and keep cool when carrying for a long time. 2.   【Fashion Design & Updated structure】Stylish design makes this backpack great as a professional work backpack for the office, a slim fashion bag for the street, a travel backpack for adults. 3.   【Large Capacity】 Spacious large main compartment offers a large free space for your daily needs.      One separate laptop compartment holds 14 inch laptop.      Besides, the zippered main compartment has a file compartment and two exterior pockets for pens and highlighters.                   Then there are two water bottle pockets on the sides for drinks and an anti-theft zipped pocket for valuables. 4.    【Multiple Occasions】 This casual backpack is suitable for gentalmen and ladies.                   Recommended for daily use / office / shopping / camping / hiking / travel. Fabric: OxfordInside: FabricSize: Length 30*1 width 5* height 45CMStructure: main bag/computer/inner pocket, etc