How to choose a school bag?

1.The weight of the school bag does not exceed 10% of the child's weight. Overweight school bags may cause the child's spine to change position to accommodate the load. Studies have shown that when the load on the back increases, it also increases the compression of the intervertebral discs. This can lead to back pain and even temporary compression of the discs and abnormal posture. An overweight schoolbag may also cause instability of the body's center of gravity, increased pressure on the arches of the feet, and greater contact pressure with the ground. When the weight of the schoolbag accounts for about 20% of the child's weight, it will press the chest corridor to affect breathing. Therefore, the weight of the schoolbag should not exceed 10% of the child's body weight. Students try to wear soft-soled shoes when carrying school bags to reduce the pressure on the soles of the feet and reduce the risk of bone damage. 2. School bags to match the height of the child Different age children suitable for different sizes of school bags, school bags attached to the back of the child's area should not exceed 3/4, in order to prevent the "package does not fit the body". School bags should not be wider than the child's body, and the bottom should not be 10 cm lower than the dry waist. 3. It is best to buy a shoulder bag for your child Single-shoulder bags tend to make children unconsciously raise their shoulders to stabilize the bag strap, which can easily lead to long-term contraction of the shoulder and back muscles, causing shoulder and back pain. Shoulder bag back for a long time, the body load increases, its asymmetry will also affect the muscles, spine and bones, leading to scoliosis, affecting the child's growth and development. Shoulder bag is best to choose a wide shoulder strap, in the case of the same weight of the schoolbag, the wider the shoulder strap can disperse the weight of the bag and reduce the pressure on the shoulders. When the child carries a schoolbag, try to put the bag with a long strap to maintain the center of gravity of the schoolbag in the waist; third to sixth grade children are in a period of rapid growth and development, the relative strength of the muscles grow slowly, it is recommended to choose a schoolbag with waist assistance belt. 4. school bags equipped with reflective materials The reflective material on the school bag can make it easier for students walking on the road to be identified. To the passing vehicle drivers to play a reminder and the number of signs 5. The back and bottom of the school bag should have a support function This can help children to reduce the burden, even if loaded with the same weight of the book, the child carried a lighter than ordinary school bags feel, the back to play a protective role. 6. Schoolbag material should be odorless If the schoolbag has a serious irritating smell, it is likely to be substandard products, long-term exposure will affect the health of children.