All-Match Large Capacity Soft Leather Students Travel Backpack Bag Size: Big Capacity: 20-35L Package Internal Structure: Zipper pockets, Mobile Phone Pockets, Document Pockets, Interlayer Zipper Pockets Opening Method: Zipper Material: Genuine Leather With Lock: No With Or Without Rain Cover: None Processing Methods: Soft side Hardness: Middle Pattern: Pure Color Lining Texture: Polyester cotton Carrying System: Curved Shoulder Straps Bag Shape: Vertical Square Color: Red, Blue, Black Is there a back cushioning cotton: Have Waterproof Degree: None Item number: FLTRB-01