There are majorly two types of armrests: 1. Fixed Armrest: This pair of armrest for office chairs provides a non-adjustable support for the user’s arms. It’s generally used in entry level products or in executive cushion chairs which are particularly not intended for intensive use and in which the importance of the design often prevails over the technical characteristics. 2. Adjustable armrest: Adjustable armrest allows you to adjust the height of the arm support point as it is very important for an individual’s body to have that support while sitting when using and not using the armrest. A good adjustable armrest should be in the correct position under the arm when needed and yet should not hinder the movement of the chair, especially under the desk, when not needed. There are different types of mechanism to adjust the armrest’s height; the main ones are with button. By pressing a specific button, the armrest is free to move in height, by releasing the button, the armrest locks in the desired position. 1D: Arm pad height is adjustable. 2D: Arm pad moves front back with height adjustment. 3D: Arm pad moves side to side along with being 2D. 4D: Arm pad changes its angle and can be set diagonally. 5D: Equipped with asymmetrical pad, that can move in all directions. The possibility of supporting the arm offered by the armrest changes the impact on an individual’s body posture significantly while using a chair. These transitions helps an individual to work efficiently and focusing on their work rather than looking for a comfort. Further, ergonomic refers to the adjustability of the chair to match the individual user needs and preferences. For example the adjustable 4D armrest that goes up and down, forward and back and left and right. So there is a full range of adjustability to the armrest to fit an individual’s shoulder and elbow height requirements. The back of the backrest goes up and back and it also has an adjustable lumbar support that moves up and down as well as invert and outward. That’s really nice because not everyone is built the same and having the adjust ability to match your individual needs is really the most important thing.