Features: Large Capacity: The rucksack is 20L that is enough to meet your daily needs, you can carry many items when travelling, freeing your hands easily, and it is suitable for school and outdoor use. Waterproof: The rucksack is made of polyester, which is water-resistant and durable, you can use it without worries because it protects your items from dust and water. Sturdy Material: The computer backpack is made of high-quality material which is durable, smooth, and scratch resistant. It can be used for a long time. Occasions: Suitable for camping, hiking, trekking, backpacking, fishing, school, travel and other outdoor activities and places, this backpack is a good supply for businessmen and students. After-sale service: We strive to provide each customer with the highest standard of customer service to ensure you have a pleasant shopping experience. If you have any issues, inquiries or need assistance, please feel free to contact us directly. Specifications: Material: Polyester Color: Blue, Black, Gray Size: Approx. 45*30*12.5cm 1 * Backpack