1.Ergonomic chair to delight your daily seating experience for home office,drafting,computer,hospital,school full adjustable include adjustable backrest recline,adjustable seat height,adjustable foot ring 2.Comfortable cushion: The special design of the seat cushion with strong yet pliable foam is cradling your body to provide super comfort 3.Height adjustable seat: Seat height adjustable from 19'' to 28'' by quaity pneumatic cylinders 4.Lumbar and Spine support: The backrest can be adjusted from upright to mid or full recline to fit the natural curve of your body to support lumbar and spine to release back pains 5.Smooth rolling on all floors: The foot ring and smooth rolling casters can make you move around ly to reach and shift between your work 6.Easy to assemble: minutes to put together per instructions in the package, and no tools requested 7.Constructed with high quality materials and components, up to 400lbs weight capacity. It comes with a oneyear warranty for the chair and all components.