The first choice for a backpack is to recommend a backpack with two shoulders, just like a good hiking bag. The back material is thicker and less prone to deformation. Elementary school students should follow this principle in their backpacks. Parents should not adjust the straps of their backpacks too long, and the center of gravity should be right on the waist and sacrum. For a backpack with a lever, if the length of the lever is not suitable, it can cause damage to the child. If a child is used to pulling a backpack with one hand, over time, it can cause uneven force on both sides of the spine.
The sides of the spine are like a balance, and if only one side is exerted, over time, it will cause the spine to tilt and bend to one side. During childhood, as the spine is still in its developmental stage, it is important to ensure that both sides are evenly stressed, making a backpack a better choice.
In addition, children's backpacks should not be too heavy. Even with the best protection, if the backpack itself is too heavy, it will still have an impact.
Straps: pay attention to whether the width and thickness of shoulder straps, sandwich foam pad, arc, and hardness are appropriate. Because the structural design of the shoulder strap is reasonable, it is related to the comfort of backpack users. Backpack cushion: The interlayer of a good backpack cushion should have a foam cushion with appropriate thickness and hardness, so as to protect the user's back. If there are strip soft cushions on both sides of the back cushion of the package, it is beneficial for air circulation and increases comfort.
