This briefcase as a whole is made of high-quality nylon material, ultra-lightweight, waterproof (if you find water stains in time to wipe will not wet off, completely soaked in water will wet off) zipper head and tail preferred metal, zipper pendant is artificial leather. There are one open storage and two open storage on both sides of the bag. The internal layout is simple and neat, a bag to deal with the usual work required supplies (can be stored within 15 inches of the laptop and daily necessities)