Ergonomic Massage Gaming Chair: This gaming chair is designed with a lumbar support pillow and a headrest to support your back and head. In addition, our waist cushion also has massage function. You only need to connect the USB to the power supply to relieve your waist fatigue when you sit for a long time. Height Adjustable Seat and Armrest: Considering the different table heights and personal habits, we used high quality gas rod for safety seat height adjust, helping you find the most comfortable position. Sitting and Lying Double Use: The back of this racing chair can be adjusted from 90 to 180 degrees, so you can choose your desired comfortable angle free. The chair also has one considerate footrest, which gives your legs support when you sleep on the chair. 360 Degree Rotation & Free Sliding: The seat can rotate 360 degrees, which can bring a little fun to your tedious work.