The back frame is designed like an inverted “lock”, with the adjustment knob acting as its “keyhole”. This setup allows you to adjust the tension of the lumbar support for a secure fit and effective pressure relief.
01 Knob-adjustable Lumbar Support Design, Flexibly Support Lumbar & Back
02 Knob-adjustable Lumbar Support Design, Flexibly Support Lumbar & Back
03 3-lock Tilting Mechanism, Freely Switch Between Work and Leisure
04 Seat Cushion with Forward-bend Design, Relieve Fatigue From Prolonged Sitting