Ergonomic task chair features a refined sleek profile with distinctive comfort and support. Translucent, patterned, weave mesh back provides generous lumbar and pelvis support while promoting dynamic back and seat movement. Energy-absorbing seat foam under fabric upholstery conforms to your body and disperses your weight ergonomically to improve blood circulation and relieve pressure points. Arms with soft pads adjust in height. Other functions include synchronous knee tilt torsion glide with pre-set tension, positive back lock release and pneumatic seat-height adjustment. Five-star, heavy-duty nylon base is equipped with 2" casters for easy chair movement. Weight capacity is 300 lb..