1. Large capacity to meet the daily needs of the travel. 2. With a waterproof bag, you dont have to worry about getting wet inside even when riding in bad weather. 3. With high quality zipper head, it is durable and not easy to break. 4. Lightweight, lightweight, carbon fiber PU hard shell material, strong and durable. 5. High-gloss light bars improve safety at night rides. 6. Sponge materials are added on both sides of the back to improve your riding experience. Specification: Product Name: Riding Backpack. Material: Carbon Fiber + Nylon Cloth. Type: Bag. Color: Blue/Black/Green/Red. Size: 48cm/18.89" x 37cm/14.56" (W*H). Uses: Motorcyclist Outdoor Travel. Note: 1.We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need. 2. Please allow 0.5-1 inch difference due to manual measurement. (1inch=2.54cm) Package Included: 1 X Riding Backpack 1 X Waterproof Bag