Waterproof Ergonomic Laptop Backpack Material Type: Polyester Laptop Size: 15.6 Inch Compartments: 5 Capacity: 20-39 Liters Style: Fashion, Business Interior: Computer Layer Use: Travel, Work, Business, School Closure Type: Zipper Carrying system: ergonomics Dimensions information: 42*32*12 cm Handle/strap type: Handel hard Feature: multi-functional, high quality anti-theft USB waterproof 100% eco-friendly lightweight stylish appearance capacity 35L