Boss Office Products Black Contemporary Ergonomic Adjustable Height Swivel Task ChairBreathable mesh back Breathable mesh seat cushion Flip arms Spring tilt mechanism Upright locking position Pneumatic gas lift seat height adjustment 25in black nylon base Hooded double wheel casters Features Collection Name N A Color Finish Family Black Manufacturer Color Finish Black Back Material Mesh Seat Material Mesh Frame Material Metal Wood Species Poplar Finish Type Black Style Contemporary Trend Modern Type Task Number of Casters Wheels 5