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The three function design can reduce shoulder and neck pressure and reduce back probability.
Pressure-free backpack: with three major functional design: 1, spinal compression-free design, the middle part of the backpack concave, providing no pressure space, reducing the chances of the bag hitting the spine when walking; 2, unloading decompression design, so that part of the weight of the bag from the shoulder to the pelvis, to disperse shoulder pressure; 3, the design of the center of gravity inner plate, so that the book bag. The center of gravity is close to the back, so that the body does not need to lean forward to achieve balance, and helps to keep the back straight. Pressure-free backpack is designed to reduce shoulder and neck pressure, reduce the risk of back, and better protect the spine of children.