Waterproof 15"17" USB Business Laptop Backpack for Men

  Features: Difference between Model A and Model B【Capacity】: Model A has a large capacity with two zipped main compartments, while Model B has a small capacity with only one zipper main compartment.【USB Charging Hole Position】: Model A USB charging hole is above the right pocket, and Model B USB charging hole is on the left pocket.【Computer Compartment】: Model A separate zipper computer compartment, Model B computer compartment is in the zipper compartment   Differences between Model A and Upgraded Model AOn the basis of Model A, the upgraded Model A adds the design of a phone suction cup to the shoulder strap   Backpack Features: ✨ The front part adopts a 4-point reflective design, the direct reflective point will send out fluorescent tips to ensure your night safety; ✨ 13-inch, 15-inch, 17-inch three sizes, there are three models to choose from to meet the needs of school, work, travel✨ With USB charging Jack, solve your phone charging problems during the trip.✨ Strong an