Men's Business Travel Bag Backpack Leisure Waterproof Computer Bag Student School Bag $ 18.20 Product information Material: Nylon Opening method: Zipper With or without liner: Yes The internal structure of the bag: Zipper pocket, mobile phone bag, certificate bag Function: Breathable, waterproof, wear-resistant pattern: Plain style: Casual Hardness: Medium Color: Blue, black, gray Size: 14 inches