Description: 【Durable Material】This backpack for men women is made of high quality polyester material, It is also equipped with metal zippers, which can work properly with long time usage life. You can open and close the backpack easily and smoothly. 【Multiple Pockets】The travel backpack with many compartments, The main pocket can hold your travel goods, with various pockets can be used to store notebooks, earphones, and other small items, for quick pick out. The travel bag has a built in laptop compartment that fits most laptops. 【With USB Charging Port】Our laptop backpack with USB interface design, great convenience for charging your electronic devices, this backpack offers you convenient way to charge your phone while traveling. 【Adjustable Shoulder Straps】The backpack padded straps for walking stable and comfortable. adjustable strap as well as an air mesh ventilated back panel that helped minimize back sweat. 【Multifunctional Backpack】This backpack can be carried with you or to work and daily, can be easily stored, casual style, suitable for travel, commuting to work, business trips, outdoor activities, shopping, etc. Specification: Material: polyester Size Chart: 50L: 30cmx18cmx48.5cm/11.81inchx7.09inchx19.09inch 60L: 35cmx22cmx53cm/13.78inchx8.66inchx20.87inch 70L: 40cmx23cmx60cm/15.75inchx9.06inchx23.62inch Package Includes: 1 Backpack Note: Please allow slightly errors due to manual measurement and different monitors.