Large-capacity backpack canvas men's backpack multi-function shoulder computer backpack outdoor travel bag

Material: Canvas 

Lining texture: cotton

Strap root number: double root

Popular elements: retro

Bag shapes: square vertical section

Function: waterproof, breathable, wear-resistant, anti-theft, lightening, shockproof

Package internal structure: ID bag, mobile phone bag, laminated zipper bag, zipper pocket, computer pocket