Model number: L2022A Size: Standard Chair Cover Material: Mesh Arm Type: Padded loop armrests Mechanism Type: Conventional Tilt Gas Lift: 80/10mm Base :R330mm Nylon Base Casters: 50mm Caster/PU Frame: Plastic Foam Type: High Density Mold Shaping Foam Adjustable Back Angle: 150° Adjustable Lumbar Cushion: Yes Adjustable Headrest: Yes