Business casual multifunctional men's backpack $ 26.41 Bag internal structure: ID bag, mobile phone bag, sandwich zipper bag, zipper pocket, computer pocket Opening method: cover type Applicable gender: male Material: Oxford cloth Function: waterproof, breathable, wear-resistant, anti-theft, burden reduction, shock resistance Applicable gift-giving occasions: business gifts Lining texture: polyester Accessories type: backpack shoulder pads Strap root number: double root Popular elements: retro Outer bag type: bag with lid Bag shapes: square vertical section