A superior high back task chair offering exceptional comfort and infinite seat and back position adjustments, so each user can attain an optimum ergonomic seating position. Features Gas lift adjustable seat height Ratchet height adjustable back/lumbar Independently adjustable seat & backtilt free floating or lockable Polyurethane moulded foam 60mm twin wheel castors Fabric colour: Charcoal Specifications(mm) Overall 630w / 610d / 1030h Back 430w / 560h Seat 490w / 470d Seat Height 450-580h Buro Quality Assurance: – 10 yearsGuarantee (excludes upholstery)– At least 95% Recyclable– Global Greentag Certified– 8 Hours Indicative Daily Seating– Up to 150kg Buro Guaranteed User Weight– Lifetime guarantee on Superior Gas lift– Manufactured in a ISO9001 & ISO14001 Certified Factory Note: Assembly required