Size & Multiple Pockets: : 42*30*14cm, this professional backpack has a separate laptop compartment, which is especially convenient for carrying 15.6 inch Laptop/Surface Book/Macbook Pro. Three spacious main compartments offer space for folders, folders, books, clothes, lunch boxes and other everyday items. The multifunctional compartment with multiple compartments and pen pockets can . USB charging port: : USB port allows you to charge your smartphone anytime, anywhere without taking out the power bank. The USB interface uses an integrated cable design, which is very convenient for you to charge your electronic devices by connecting your own mobile power supply. The headphone jack allows you to free your hands while enjoying audio, music, etc. (Note: mobile power is not included). . Men's business backpack: : With a sturdy luggage strap, the Thnkstaps backpack can be attached to the suitcase to realize one-handed luggage. It is the best choice for travel backpack, backpack laptop bag, business backpack, laptop backpack, school backpack, bicycle backpack, professional laptop bag, suitable fr outdoor hiking, leisure travel and campus . Light and comfortable: : Padded breathable mesh back design promotes air convection, ventilation and heat dissipation. This breathable mesh shoulder strap reduces shoulder pressure. The shoulder straps are very flexible and you can adjust them to suit your comfort. The luggage strap on the back can attach the travel backpack to the suitcase. .