1. [MULTI-COMPARTMENT] Dimensions: Spacious main compartment can accommodate lots of stuff such as college supplies, travel accessories, clothes, stationary, notebook...etc. Multiple pockets keep your belongings organized at all times. 2. [Waterproof & Anti-Theft] Made of durable ABS hard shell on the front flap. The Hard Shell Armor and waterproof material could protect your items from light rain and your laptops from shock. 3. [Ergonomic & Convenient Design] Comfortable airflow back design with thick but soft multi-panel ventilated padding gives you maximum back support. Luggage strap allows backpack to slide over the luggage tube, secure your backpack in place and convenient.This carry on backpack is suitable for young to carry on the street or on campus. It can be used as gaming backpack, business office Backpack or daily backpack. 4. [Smart Usb Port] Built-in removable charging cable is convenient to charge your cell phone by connecting your power bank, this tech backpack can free your hands from power bank (Power bank is not included). Colour:Dark Gray Material:ABS+skin film Package Contents: 1 * hard shell package Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.