This large-capacity single-shoulder bag features a side zipper closure and a black adjustable shoulder strap. It's crafted from canvas, and the fabric is slightly waterproof and a breeze to clean. With its generous capacity, adjustable strap, and secure zipper, it's a practical choice. Do note that due to manual measurement, there might be an error of about 0.4 inches.

Using this messenger bag is a breeze. Just unzip the side closure to access your belongings. You can adjust the shoulder strap to your preferred length for maximum comfort. When carrying, place heavier items at the bottom to keep the bag balanced. As for maintenance, since the fabric is slightly waterproof, a simple wipe with a damp cloth can clean most stains. If it gets really dirty, you can gently hand - wash it with mild detergent. Be careful when measuring your items against the bag's size because there may be a small measurement error. Also, avoid overstuffing the bag to prevent the zipper from getting damaged.