The Tygerclaw big-and-tall executive chair is very suitable for comfort when sitting in office or working station. This chair is upholstered in soft and durable fabric material for better comfort. With the lumbar support of this chair, you can maintain your inward natural curvature of the lower spine for long working day. Upholstery: Fabric, with coil springs on seat Height adjustable armrest with soft pad Enhanced butterfly mechanism Class 4, 80/00 mm gas lift R350 mm coated steel base Maximum seating weight = 400 lb 55R-PA castors Meet or exceeds BIFMA 5.1 standard, and ISTA 3A TygerClaw Big-and-Tall Executive Chair - Gray