USB Charging Waterproof Large Capacity Business Backpack

Product information:
Lining texture: Polyester
Color: Black type a 15-inch, gray type a 15-inch, black type a 17-inch
Applicable gender: neutral/both men and women
Function: breathable, waterproof, wear-resistant, anti-theft, anti-seismic, burden reduction
Material: Polyester
Bearing system: air pillow belt