Sitness AirWork office swivel chair with adjustable armrests. The backrest features a breathable mesh cover and an adjustable lumbar support. It has a synchronous mechanism with fine adjustment and integrated 3D seat movement. The comfortable flat seat promotes optimal sitting posture. The tilt of the backrest can be adjusted in four stages by limiting the adjustment range. The armrests are adjustable in height and width, and the seat depth can be adjusted with a sliding seat. The Sitness AirWork is distinguished by its unique breathable backrest with adjustable lumbar support and the coordinated color of the seat and backrest. It is equipped with integrated 3D Sitness movement technology, which automatically adjusts the spring force to the user's weight and can be finely tuned with a rotary knob. The elegant black plastic base is equipped with load-dependent braked safety double wheels suitable for carpeted floors. All plastic parts are made from recycled plastic, allowing for the separation of individual resources. The product packaging consists solely of cardboard and recycled paper.