Oxford Cloth Fashion USB Rechargeable Backpack $ 17.90 Product information : Capacity : 20-35L Internal structure of the bag: zipper pocket, mobile phone pocket, ID pocket, computer pocket Opening method: zipper Material: Oxford cloth Function: breathable, waterproof, wear-resistant, shock-resistant, load-reducing Hardness: medium to soft Color: black, gray Size Information: Packing list: Backpack*1