This chair is upholstered in soft and durable fabric material for better comfort. The seat height can be easily and effectively adjusted by pneumatic gas lift and 360 degree swivel wheels make this chair more flexible in the working space. With the lumbar support of this chair, you can maintain your inward natural curvature of the lower spine for long working day. Upholstered in soft and durable black fabric Built in lumbar support to maintain proper sitting posture Flexible adjustment for seat height, armrest height and tilt tension control Heavy duty nylon base with durable multi-surface dual wheel casters Black superior PolyPropylene(PP) with PolyUrethane(PU) padded armrest for arm positioning Convenient pneumatic seat height adjustment Tilt Tension Function enables to control the smoothness of the Back rest Tilt/Recline and can be adjusted as per the weight of the person sitting on it Excellent for office, work station and cubical area 360 degree swivel wheel and chair can run smoothly on floor TygerClaw 20.5-in x 21.5-in Black Faux Leather Office Chair