Large Capacity Multi-pocket Backpack: The travel backpack with many compartments holds about 40L. The main pocket can hold goods, and fit 5-8pcs of clothes. The front compartment with various pockets can be used to store notebooks, pens, earphones, and other small items, for quick pick out. The travel bag has a built-in laptop compartment that fits most 15.6-inch laptops. With USB Charging Port: The backpack has a USB port that allows you to charge your electronic devices by connecting to your own power bank, giving you a more convenient way to charge your phone on the travel. With Trolley Sleeve & Anti-theft Pocket: A trolley sleeve on the back allows the travel backpack to attach to the handle of the carry-on luggage for hands-free transport, and easier carrying. There is a hidden anti-theft pocket on the back to protect your valuables from thieves. Independent Shoe Compartment & Wet Bag: One shoe compartment on the bottom of the backpack carries on to keep the shoes separate and everything else clean. two venting holes in the shoe compartment, make it keep breathable to not smelly. Adjustable Breathable Shoulder Straps: The laptop backpack's robust padded straps and back panel for walking stable and comfortable. A removable sternum strap that connected its two shoulder straps, as well as an air-mesh ventilated back panel that helped minimize back sweat.