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How to choose the comfort of the chair?

Whether the seat is comfortable is related to the size of the human body. There is a difference between the crowd and the crowd. Generally speaking, northerners are tall and southerners are slightly shorter, as are North America and Europe; there are differences between men and women, and there are also differences between individuals. Therefore, if you feel uncomfortable, you will find out after a try. The main points are as follows:
1. Seat height: It should be equal to the length of the calf. After sitting down, the calf will droop naturally and the sole of the foot will fall on the ground. Too high, the lower legs hang, too much pressure under the thighs for too long is not good; the seat surface is too low, the thighs can not be placed on the seat surface, the body weight is concentrated on the buttocks, it will be uncomfortable for a long time.
2. Seat depth: The seat depth should be equal to the length of the thighs. After sitting down, the knee joint bends just to the side of the chair. The seat surface is too deep and the back is not resting; the seat surface is too shallow, the thighs Without adequate support, it is uncomfortable.
3. The material of the chair surface and the back of the chair: Both should be of "flexible outside and rigid inside"-the bracket should be strong enough, but the surface has a certain thickness of elastic layer. The outermost material in contact with the human body should be breathable, wear-resistant, dirt-resistant, and not easy to generate static electricity with the human body or clothing.
4. Chair back: It is better to support all or part of the waist, back and neck. The longer the chair sits, the better the support. Because the dining chair is only used during meals, the neck can be ignored, while the office chair is best taken care of. The size of imported furniture is often more suitable for people in the country of production, and special attention should be paid when choosing.
5 Handrail: It is better to choose one that can be adjusted in height.