What portable and large-capacity schoolbags can you recommend?

I recommend German food. China's name is GotYaSatch. I feel small. . . Because now there are Arctic foxes, Adinik and so on in China. . After watching too much, I feel similar and the price is not cheap. . Then I went shopping once and saw the specialty store of this brand. My mother dragged me in and walked around. . I think it's a good person, but it's really comfortable. . . Then I suddenly went to the beauty spot after seeing the collocation of the models in the mall. Capacity and layered design are the standards of a good schoolbag. Their schoolbags are still good! Light! English! Later, I looked it up on the Internet and found that this brand is famous for its patent of spine protection. . You can evenly distribute the load on your shoulders to your back, which will be more comfortable. The quality is also very good, and it feels like the best material.