Task chair FLEX black. The ergonomic work chair FLEX is comfortable and durable and meets the needs of the most demanding user. Back- and headrest: the plastic frame, which provides good support for the back and neck, is covered with polyester mesh fabric. The height of the lumbar support is adjustable. The height and angle of the headrest are adjustable. Seat: the plastic seat frame has a comfortable shape and is covered with polyester mesh fabric, allowing good airflow. The seat depth is adjustable. Polyester mesh fabric's Martindale value 50,000. Armrests: plastic armrests with soft PU pads. Height (17-24cm), depth and angle of the armrests are adjustable. Mechanism and functions: the chair has a multifunctional mechanism with adjustable stiffness. The angle of the backrest can be locked in four positions. Pneumatic seat height adjustment. Cross base and castors: 5-pronged polished aluminum cross, R35cm. Plastic castors D60mm. The overall dimensions of the chair: 70x70xH116-126cm. Seat width 50cm, seat depth 50cm, seat height 48-57cm. Weight limit: 130 kg