Inflatable lumbar pump for personalized back support, Contoured seat evenly distributes body weight to minimize pressure under thighs and help eliminate fatigue, Waterfall seat edge is designed to reduce pressure behind knees, Height-adjustable arms for custom comfort, Seat/Back Color(s): Gray; Features & Functions: 360° Swivel; Back Height Adjustment; Dual-Clutch Posture Control; Integral Lumbar Support; Pneumatic Seat Height Adjustment; Tilt; Tilt Lock; Tilt Tension; Arms Included: Yes; Recommended Applications: Task, Multi-Task & Task Intensive, SKU: AZMAYL4019AG2110