Slim laptop backpack men, Expandable laptop backpacks，Flatpack 15.6 "Laptop backpack, Travel Laptop backpack for Men, College backpack (Grey)
【Extensible design】The normal size is 17.3*11.8*3.9, and the expanded size is 17.3*11.8*7.1. Simple and generous for daily use, it turns into a large-capacity backpack when you open the expansion zipper for business trips and travel.【Elegant Fabric & Lightweight】The backpack weighs 750g/1.65lb. The use of high-quality fabrics makes the backpack lightweight but also very durable.【top-grade zipper】The high quality metal zipper ensures that the backpack is still smooth in long-term use.【High quality zipper】The high quality metal zipper ensures that the backpack is still smooth in long-term use.【Water Resistant】The high-density fabric makes the backpack very waterproof, which can prevent the infiltration of rain to the greatest extent. It's also very easy to clean.【occasion applicable】The design of this backpack is simple and sleek, which is a good choice for daily use, college and business. The extensible design can also meet your travel needs.