● Adjustable chair and armrest heights considered for different people ● Flexible backrest angle adjustment with a rotatable armrest to meet various needs ● Retractable footrest convenient for relaxing your leg reducing fatigue ● Soft sponges guarantee a comfortable sitting feeling ● Iron frame with premium gas rod for extra stability ● Lumbar pillow with massage function for relax ● Smooth wheels for quiet and easy movement to any place Installation guide