waterproof 15.6 Inch Laptop backpack Material Type: Nylon Weight: 1.7KG Laptop Size: 15.6\" Inch compartments: 5 Capacity:20L Style: Leisure Closure Type: Zipper & Hasp Carrying System: Ergonomic Handle/Strap Type: Soft Handle Usage: Day Backpack Interior: Computer Interlayer Dimension information:L30*W15*H43cm Feature: Multi-functional,High Quality Waterproof USB Charging Lightweight Stylish look