Contemporary Task Office Chair Mid-Back Design Back Width: 17-20" Ventilated Mesh Back Built-In Lumbar Support Tilt Lock Mechanism rocks/tilts the chair and locks in an upright position Tilt Tension Adjustment Knob adjusts the chair's backward tilt resistance Padded Black Mesh Upholstered Seat CA117 Fire Retardant Foam Waterfall Seat reduces pressure on your legs Swivel Seat Pneumatic Seat Height Adjustment Padded Flip-Up Arms Heavy Duty Nylon Base Dual Wheel Casters
