Size:41*31*12cm High Quality Material: The laptop backpack is made of good environment-friendly polyester fabric with new function of water-repellent, which is quite durable. Larger roomy compartments can provide separated space for computer, iPad, A4 files, wallet, clothes, power bank and more your items. Built-in USB PORT is convenient to charge your cell phone by the connected power bank (POWER BANK is not included).