This product is a physio-approved ergonomic office chair with multiple features for personalization of the chair to best suit your shape and weight. Features include a molded foam back, inflatable lumbar support, a seat slide for seat depth adjustment, and a height-adjustable ratchet back. The synchro mechanism allows you to independently fix or free-float the backrest and the angle of the seat including forward seat tilt. The torsion control knob is for adjustment of the tilt tension to match body weight. Available with either fixed, height adjustable, or height and width adjustable arms.
Comfy chair but unfortunately the lumbar support cushion doesn't stay inflated anymore after 2 years of use.. Anonymous. Wed Apr 03 2024