How to choose
Whether the seat is comfortable or not is related to the size of the human body. The crowd is different from the crowd. In general, the northerners are tall, the southerners are slightly shorter, and the same is true in North America and Europe. There are differences between men and women, and individuals and individuals are also different. Therefore, it is uncomfortable to take a try. I mainly know the following points:
Seat depth: seated chair, the depth of the seat should be equal to the length of the thigh. After sitting down, the bend of the knee joint is just to the side of the chair. The seat is too deep and the back is not covered. The seat is too shallow and the thigh is not enough. Support, not comfortable.
Seat height: It should be equal to the length of the calf. After sitting down, the calf will naturally sag and the soles of the feet will land. Too high, the calf is hanging, the pressure on the lower leg is too long for too long; the seat is too low, the thigh is not placed on the seat, the weight of the human body is concentrated on the buttocks, and it will be uncomfortable for a long time.
Backrest: It is best to support all or part of the waist, back and neck. The longer you sit, the better your support will be. The dining chair can be ignored because it is only used during meals, and the office chair is best taken care of. Imported furniture sizes are often more suitable for people in the country of production, and special attention is required when selecting.
The material of the seat and the back: both should be "outer and soft inside" type - the bracket should be strong enough, but the surface has a certain thickness of elastic layer. The outermost material that comes into contact with the human body should be breathable, wear-resistant, and dirt-resistant, and it is not easy to generate static electricity from the human body or clothing.
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