4-way built-in lumbar support
The 4-way built-in lumbar support allows you to adjust the built-in lumbar support in 4 directions, upward, left and right directions.The optimal support position holds your lower back and helps reduce fatigue.
Rounded ergonomic armrest.The 4D arm allows 4 movements, including elevating and lowering forward, forward and backward sliding, and side-to-side horizontal slides.Up and down range of motion is approximately 3.1 inches (Top and bottom adjustable paddle is made of high strength metal.
Adjustable seat height function.
You can easily adjust the height of the seat with the lever under the seat to match your height or your desk environment.You can set it to the best seat position.