This vinyl upholstered office chair is a great option for your office or home. Mid-back office chairs are the logical choice for performing an array of tasks. A mid-back office chair offers support to the mid-to-upper back region. The waterfall front seat edge removes pressure from the lower legs and improves circulation. Chair easily swivels 360 degrees to get the maximum use of your workspace without strain. The pneumatic adjustment lever will allow you to easily adjust the seat to your desired height.Contemporary Office ChairBlack Vinyl UpholsteryMid-Back DesignTwo-Piece Cushion with CAL 117 Fire Retardant FoamTilt Lock Mechanism rocks/tilts the chair and locks in an upright position, Tilt Tension Adjustment Knob adjusts the chair's backward tilt resistanceWaterfall Seat reduces pressure on your legsPneumatic Swivel Seat Height AdjustmentNylon ArmsHeavy Duty Nylon BaseDual Wheel Casters