New Laptop Compartment & Anti-theft Pocket Shoe Compartment & Wet Bag USB interface 【Flight-approved Travel Backpack 】The size of the backpack is 18.5 * 12.2 * 8.66 inches (manual measurement may have errors, not exceeding 3cm), and the capacity is about 45L. This backpack meets the maximum size allowed by most airlines, and is suitable for daily travel as well as business travel. You can place it under the seat or on the overhead luggage rack. 【Laptop compartment and multiple pockets】The backpack has four compartments. The front cabin is a wet and dry separation bag. The laptop compartment on the back can accommodate most 17 inch laptops. In the middle are the two largest compartments of the backpack, which can be unfolded 180 degrees and can accommodate 8-10 pieces of clothing. In addition, the backpack also has multiple small pockets for different purposes, allowing you to easily store items. Color is listed as jewel blue but appears gray