Description Product Description Material: high quality durable and practical canvas. Product size: 11.4 inches long x 16.5 inches high x 5.5 inches deep; suitable for laptops under 14 inches Inside: cell phone pocket, laptop sleeve. Outside: 2 side pockets, 1 front zip pocket Adjustable padded shoulder strap for comfortable carrying This backpack has endless uses thanks to its convenience and versatility. They offer plenty of space, hands-free carrying and a variety of organizational tools. Maintenance method: 1. Do not squeeze or place heavy objects to avoid damage to the bag. 2. To avoid mold, dry it in a cool, dry place and place it in a place with relatively low ventilated humidity. 3. Do not stack empty bags with other items to avoid deformation. 4. When it gets wet from rain, wipe it with a dry cloth and then dry it. 5. Use a soft brush to remove dust and other things on it. 6. Use a brush dipped in neutral detergent to dilute with water and wipe gently, but be careful not to leave any moisture inside. Tips: 1. Clean and wipe with a soft cloth when not in use. 2. Do not machine wash or dry clean. 3. Do not use detergent or bleach. 4. Do not iron or rub.