1. 1000D Nylon Cordura denim pattern in navy blue , white stripes and reflective tape design. 2. Expandable sides for increased capacity and can be used as a saddle bag. 3. The large extra padded bottom of the bag's body can absorb shock, making it fit for keeping daily necessities or even monocular photographic equipment. Best for long-distance cycling. 4. Suitable for mountain bikes and even on the rear shelves of wagons, and allow uses in many more areas. 5. Water-resistant design against changing weather. 6. Reflective tape on both the sides and the rear, show a good warning effect in low illumination, ensuring safety warnings during night-riding. 7. The outermost pocket can hold a standard water bottle or even a large Coke. Bottom of the bag comes with reflective tape.