The backrest can be considered as A rest or support for the back. We need a variety of chairs that allow different users for each sitting in various postures.
Backrest aligns the neck, back and improve your posture. regular chairs do not provide backrest curvature. By using a seat or backrest for back support device between the seat and the body parallel to the neck and spine straight.
There are various backrest designs available in the market or you can search online. A little change in standard backrest chair design (Also known as “การออกแบบเก้าอี้พนักพิงมาตรฐาน” in the Thai language) can change the whole appearance of the chair. Some of the backrest designs include plugs, gilded Naga pattern, covered with gold.
A good backrest makes a true healthy sitting choice in a way that uniquely encourages movement part as well. The chair actually encourages active sitting and helps the core muscles to relax and adds strength to your back giving it better support without relying on a backrest.
The back angle is also very important in backrest designs. 15 degrees either to the back corner, but you also have basic slope down toward the seat back 5 degrees as well.
One popular type of backrest that can be found on a special ergonomic seat backrest is divided into two parts, one part for the upper back and one for the lower back.
You need to find an armrest that will not interfere with the work that you are doing and that will give you plenty of room to move around.
If you definitely need them, then you need to find armrests with adjustable height, width, and enough padding to be comfortable.