DJ06 Oxford Cloth Waterproof Wear-resistant Portable Expandable Laptop Bag for 14.1 inch Laptops, with Detachable Shoulder Strap 1. With a light pull, the side panels can be expanded by 3-6cm to meet the needs of carrying more items. 2. Three compartments, reasonable storage space. The main bag compartment is provided with a Founder computer layer, the front bag compartment is provided with a mouse bag, a pencil bag, a business card bag, and the back pocket bin can be used for file information. 3. Rebound shock-proof cotton + strap design to protect the computer from looseness, effectively protect the computer and prevent damage. 4. Water-repellent fabric, wear-resistant, tear-resistant, and safe to protect items. 5. The zipper is durable. 6. Removable hooks. 7. Detachable shoulder strap for adjustable length and easy to carry. Specification: 1. External dimensions (without expansion thickness): 39x28x5.5cm. 2. Internal dimensions (without expansion thickness): 37.5x26.5x5cm. 3. Weight: 450g.