New multi functional backpack for men

Capacity: 36-55lBag internal structure: mobile phone bag, certificate bag, sandwich zipper bag, computer pocketCover opening method: zipperApplicable gender: MaleMaterial: EVALock: noWith or without rain cover: noFunction: breathable, waterproof, wear-resistant, anti-theft, anti-seismic, load reductionProcessing method: paint finishHardness: moderately hardPattern: solid colorStyle: Street trendLining texture: NylonAccessory type: handleNumber of shoulder belts: DoublePopular elements: splicingLifting parts: soft handleColor: black: high-end edition, blue :high-end edition, red :high-end edition, A black :regular edition, A blue: regular edition, A red :regular edition