Buy a shoulder-width bag by SMS.

If there is no requirement for appearance, go to Dahutong to buy it. The bags there are cheap, but the quality is not very good. You have to be careful to find a better one. If you want to buy something with a little personality, I suggest you go to the 4th floor of Balitai New Culture Market. There is a shop selling bags next to Yahui, which is very fashionable and looks very novel.

If you want a more popular, but relatively beautiful bag, you can go to a shop opposite Lebin in binjiang road. The quality is very good, the appearance is not very old-fashioned, and the price is not too expensive, 100 yuan or so. But the price must be fixed, so as to ensure that it is around 100 yuan.

Choose a backpack with wide shoulder straps: shoulder straps can evenly share the weight of the backpack and avoid scoliosis, so don't choose the popular one-shoulder backpack. The wide shoulder strap makes the unit pressure of the schoolbag on the shoulder muscles small, thus avoiding muscle tension and pain.

No matter what brand of schoolbag is good, the lightweight material of schoolbag is the first concern. Originally, primary school students were physically weak and carried a lot of books and articles. In order to avoid increasing the schoolwork burden of primary school students, schoolbags should try to choose lightweight materials. In addition, too many metal buttons should be avoided in the schoolbag, because too many metal accessories will not only increase the weight of the schoolbag, but also cause harm to the back.

There are straps on the students' schoolbags to prevent the shoulder straps from falling off. Because most primary school students are active, with a fixed strap, the schoolbag will not sway from side to side, so even if they play with their classmates on the school road, the safety factor is relatively stable. High-quality student schoolbags are generally equipped with belts. Using the belt can make the schoolbag closer to the back, and the weight of the schoolbag is evenly unloaded on the waist bone and the disc bone.