High back operator armchair certified for 24hr usage Twist lumbar support on back with contoured seat with waterfall front Features gas height adjustment and ratchet back height adjustment Also features seat and back tilt as well as seat slide to adjust seat depth Deluxe Adjustable Arms in the traditional \"T-Shape\" are made from solid feeling black nylon, are height adjustable and are garnished with chrome detailAdjustable Arms in the classical \"T-Shape\" are made from solid feeling black nylon, are height adjustable and padded for extra arm rest reliefComplete with height adjustable arms or deluxe adjustable armsSupplied with a black nylon base with easy glide castors Upholstered in leather look black PU Also available without arms and/ or headrest 1 year warranty