Hidden Shoulder Straps：This rolling backpack features hidden shoulder straps that allow for easy conversion: use it as a backpack when you need hands free mobility, or hide the straps to use it as a rolling laptop bag. This backpack with wheels features an innovative top-opening design, allowing you to pack easily and access your items quickly, perfectly meeting your diverse needs. Boasting a 30L capacity, it effortlessly holds all 2-3 day trip essentials. It features 3 main compartments and 19 total pockets, including a dedicated 15.6" laptop sleeve Airline-Approved Size：With dimensions of 13*8*17.7 inches