USB charging computer backpack

Case size: medium
Capacity: less than 20L
Internal structure: ID bag, mobile phone bag, sandwich zipper bag, zipper pouch, computer insert bag, camera insert bag
Open cover: Zipper
Material: Nylon
Model No. : 1.3. k3-DG 18L
Processing: Frosting
Series: backpack, handbag
Bearing system: curved shoulder strap
Color: Black and dark
Size: 15.6 inches(47*34*18cm)