Dimension: 45cm(H) x 31cm(L) x 11cm(W) Material: Waterproof Oxford Weight: 0.76kg Features: USB CHARING PORT: Charging backpack with external USB charger port outside and built in charging cable inside,this usb backpack offers you a more convenient way to charge your phone while walking. Please noted that this backpack doesn't power itself, usb charging port only offers an easy access to charge LOTS OF STORAGE& MANY POCKETS: One separate laptop compartment hold 15.6 Inch Laptop as well as 15 Inch,14 Inch and 13 Inch Macbook/Laptop. One spacious packing compartment roomy for daily necessities,tech electronics accessories. Front compartment with many pockets, pen pockets and key fob hook, make your items organized and easier to find FUNCTIONAL:S-type comfortable close-fitting shoulder strap,uniform force,protect the spine. The pressure ergonomic design is released to effectively increase the weight loss effect COMFY&STURDY: Comfortable airflow back design with thick but soft multi-panel ventilated padding, gives you maximum back support. Breathable and adjustable shoulder straps relieve the stress of shoulder. Foam padded top handle for a long time carry on DURABLE MATERIAL & SOLID: Made of Water Resistant and Durable Anti Scratch Fabric with metal zippers.Ensure a secure & long-lasting usage everyday & weekend.Serve you well as professional office work bag,slim USB charging backpack USB CHARING PORT LOTS OF STORAGE& MANY POCKETS FUNCTIONAL