Backpacks spine protection children's schoolbags

Applicable gender: neutral/male and female
Applicable school age: primary school
Material: Oxford cloth
Bag size: medium
Capacity: 20L or less
The internal structure of the bag: ID bag, mobile phone bag, sandwich zipper bag, zipper pocket, camera pocket
Opening method; zipper
Function: Waterproof, breathable, wear-resistant, load-reducing, shock-resistant
Strap root number: double root