1. Materials: Made of quality, waterproof nylon fabric with a polyester interior. It is wearresistant, scratchresistant, tearresistant, and splashproof. The ecofriendly, waterrepellent fabric safeguards your laptop, making it ideal for daily use and outdoor activities. Comfortable for extended journeys. 2. Large Capacity: Backpack dimensions: 32 x 25 x 48 cm. Multiple independent compartments provide separate storage for laptops up to 39.62 cm (15.6 inches), tablets, A4 files, books, pens, tickets, and passports. A side pocket holds a water bottle. The padded laptop compartment features thick foam padding to protect your device from accidental bumps. 3. USB Charging Port: Equipped with an external USB socket, this business backpack allows convenient phone charging via a power bank and adapter (charging cable not included). for commuting or daily use. A choice for work, business, or travel. Also suitable for students and teens as a college or school backpack. 4. Multifunctional: This versatile bag can be used as a trolley or converted into a backpack by extending the straps. It is practical for carrying books and laptops as a trolley, while also functioning as a backpack for transporting light clothing on short trips.