Men's Backpack Top Layer Cowhide Black Computer Bagpack Bag Size: Big Capacity: 20-35L Package Internal Structure: Zipper pockets, Mobile Phone Pockets, Document Pockets, Interlayer Zipper Pockets, Computer Pockets Opening Method: Package Cover Type 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 Number Of Shoulder Straps: Double root Carrying Parts: Telescopic Handle Outer bag type: Inside Patch Pocket Bag Shape: Vertical Square Color: Gray Green, Black, Brown Is there a back cushioning cotton: Have Waterproof Degree: Medium Accommodates Computer size: 13 Item number: MLLB-01