Product information: 

Capacity: 20-35L
The internal structure of the bag: zipper pocket, mobile phone pocket, sandwich zipper pocket, computer pocket, camera pocket
Material: Nylon
Function: Breathable, waterproof, wear-resistant, anti-theft, anti-vibration, capacity expansion, load reduction
pattern: plain
Lining texture: polyester
Strap root number: double root
Outer bag type: inner patch pocket
Colour: Black

Size Information: 

Size: 29cm wide, 7cm thick, 42cm high