Product information : Material: Polyester Opening method: zipper Internal structure of the bag: zipper pocket, mobile phone pocket, interlayer zipper pocket Luggage size: small Bag shapes: square vertical section Function: reduce burden Processing method: embossing Pattern: plain Hardness: Medium Popular elements: car suture Carrying parts: soft handle Strap root number: single Outer bag type: inner patch pocket Lining texture: polyester Color: 21*8*32cm-black, 21*8*32cm-light gray, 21*8*32cm-blue, 22*9*34cm-large black Packing list: Backpack*1