Lekeinchi Rolltop Laptop Rucksack Package: 1 backpack 1 clip Product Details: Material: matte polyurethane fabric Formal Size: 26 * 16 * 42 cm (LWH) Expanded Size: 26 * 16 * 56 cm (LWH) Weight: 890g/ 1.96 lbs Features: The roll-top design makes this a very adaptable bag (18 to 25 Liters),you can roll down or unroll the top with the buckles to fit your needs. Comes with a clip on the side molle system to attach extra pouches and accessories. The back zipper opening allows easy access to the main compartment. Made of durable and waterproof fabric, and easy to wipe clean. Smart front pocket, inner pocket, and latop pocket keep essentials well organized and easy to find. A well padded sleeve keeps your 17'' laptop safe. Large main compartment easily hold your clothes, camera, books, water bottle, etc. Well-padded back panel and shoulder straps are comfortable to wear even when the bag is full. Casual and unisex style for men and women, perfect for work, travel and biking. After-sale Warranty Lekeinchi Laptop backpack provides 30 days money-back guarantee for any reason and 180 days warranty for quality-related issues.