homall gaming chair office chair high back computer chair leather desk chair racing executive ergonomic adjustable swivel task chair with headrest and lumbar support (white) homall this gaming chair extends the full length of the back with support </br>for the shoulders, head, and neck. our chairs are crafted to </br>perfection and designed to the bodies natural shape, you will find </br>complete comfort with its furniture quality pu leather. </br> </br>specification: </br>tilt locking mechanism 90 to 180 degrees angle adjuster </br>height adjustable gas spring cylinder </br>sturdy metal star base </br>easy to move with color caster wheels </br>orthopedically and ergonomically designed </br>premium pu leather material </br>headrest pillow and lumbar cushion are included </br>load capacity up to 300 lbs </br> </br>dimension: </br>sitting height: 17.7 to 20.9 inch </br>backrest dimension: 22.5 and 30.5 inch </br> </br>note:every chair have detailed instruction and easy to </br>setup,helping you finished installation less than 30 minutes