Large Capacity Backpack Student Computer BackpackProduct information: Capacity: 56 75L Bag internal structure: Zipper pocket Opening method: Zipper Applicable gender: Male Material: Polyester (polyester fiber) Whether with lock: No With or without rain cover: None Function: Breathable Hardness: Medium Style: Urban simplicity Lining texture: Oxford spinning Accessories type: Backpack shoulder pads Number of shoulder straps: No shoulder strap Popular elements: Car suture With or without lever: No