⚫︎Unused ※ The top photo and the actual product photo may be slightly different, so please be sure to check the actual product photo before purchasing. Please be sure to read the profile and product description (to the end) before purchasing. Slim and Expandable Design: Slim style for light travel and commuting. It has 200% expandability when you have a lot of belongings, and you can easily switch between both. It also serves as a professional office laptop case, a slim USB charging backpack, and a backpack for college and high school students for boys, girls, teens, and adults. Perfect Protection: One independent compartment with a velvet lining that properly manages your laptop. The durable outer material of water-resistant polyester is durable, stain-resistant, and spill-proof. USB Port Design: This USB backpack, with an external USB charger and built-in charging cable, provides a more convenient way to charge your phone while walking. Please note that this backpack does not provide power itself. The USB charging port only provides easy access to charging. Hidden Straps: A back pocket for hidden straps that allows you to easily switch between a backpack and a sleeve and put it in another bag. You can also put A4 size books in the pocket. This product is unused. Please purchase only if you understand. 4R-39