1D armrests allow users to adjust the height of the armrests in one dimension, up and down. Here are some key features and applications of 1D armrests:

1. Easy adjustment : With simple buttons or levers, users can effortlessly adjust the height of the armrests to their preferences. This makes it easy to adjust the armrests to the correct height for a comfortable sitting position.
2. Arm support : By adjusting the height of the armrests, users can comfortably support their elbows and forearms while working. This helps reduce fatigue and tension in the arms and shoulders.
3. Ergonomic adjustment : When adjusting the height of the armrests, it is important to apply the 90° rule, whereby the forearms are parallel to the ground and make a 90° angle with the upper arms. This ensures an ergonomically correct position that relieves pressure on the arms and shoulders.
4. Desk Compatibility : The height of the armrests can be adjusted to the height of the desk, allowing users to easily type and work without straining their arms. This ensures seamless integration between the chair and the desk, creating a comfortable and productive work environment.

All in all, 1D armrests provide a simple yet effective way to improve the ergonomics and comfort of an office chair by adjusting the height of the armrests to the individual needs of the user.