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Charging back a heavy weight, can cause muscle tension in the neck and shoulders. Generally, it is recommended that the maximum weight of school supplies does not exceed 5% of the weight of the child's pre-school and 10% of elementary school students from public and private, as recommended by the World Health Organization From this weight the load imposed on the spine can trigger back pain. Therefore, a child of 30 kg, 3 kg should carry a maximum of 4.5 kg. And, under any circumstances, take a backpack on one shoulder. Today, students are taking up to 40% of their body weight, including books, dictionaries and computers.
Thinking that and using the technology of air, designed to ergonomic backpack AirPacks, which reduces the stress of back muscles caused by excess weight. The main function of the backpack is AirPacks adjustability to promote the objects of the human anatomy, providing freight transportation in harmony with the human physique. The backpack AirPacks reduces stress on the body by 80% and promotes an upright posture.
Source of Information and Image: Vitodibari