Multi-function computer package foreign trade USB rechargeable backpack fashion backpack fashion fan leisure one generationOpening method: zipper buckle Applicable gender: neutral male and female Material: Canvas Whether with a lock: Yes With or without rain cover: Yes Function: waterproof, breathable, wear resistant, anti theft, lightening, shockproof Processing methods: soft surface Hardness: hard pattern: plain Lining texture: polyester Accessories type : anti theft device Strap root number: double root Popular elements: car suture Lifting parts: hard handle Outer bag