Task chair TUNE black. TUNE is a versatile and functional office chair that stands out for its unique design and durability, adapting perfectly to today's dynamic working environment. TUNE offers excellent ergonomics for users height of 150-185cm. Cover material: polyester fabric, 263g/m², Martindale value 50,000. The backrest is covered with polyester mesh fabric. Headrest: freely tiltable, height-adjustable headrest. Backrest: breathable mesh fabric provides good ventilation and thermal comfort. The height of the backrest is adjustable between 50-60,5cm. Lumbar support: adjustment range 20mm. The lumbar support can be conveniently adjusted without getting up from the chair. Armrests: the height is adjustable between 20,5-30,5cm. The arm pads can be moved forward and backward and can pivot inward and outward. Seat: seat width 49cm, seat depth adjustable between 44-48cm. Pneumatic seat height adjustment between 40-50cm. Mechanism: synchronized mechanism with tilt lock and auto weight-sensing tilt tension. Cross base and castors: polished aluminium, R35cm. 65mm nylon castors (PA). Weight limit: 120kg.