New PU waterproof backpack student computer bag

Capacity: 20L or less 
The internal structure of the bag: ID bag, mobile phone bag, zipper pocket
Opening method: cover type
Material: PU leather
With or without rain cover: None
Function: Waterproof, wear-resistant, lightening
Processing methods: soft surface
Hardness: Medium
pattern: plain
Lining texture: polyester
Strap root number: double root
Popular elements: belt decoration
Carrying parts: telescopic handle
Outer bag type: inner patch pocket
Color: black, khaki, brown

Size: 19 inches