Catchy & Attractive Frame: Plywood Seat Material: 1st quality Flex Foam Back Material: Standard Foam Upholstery: High Quality Leatherite Armrest Type: Ergonomic foam Padded Armrest Material: Plywood upholstered Lumbar Protection Support: Yes Stitching: Fine cube designing Gas lift: Premium Class 3 100mm Gas Lift Mechanism: Synchronized Knee Tilt Mechanism (3 mm thickness) Back lock: 5 position back lock Tilt Tension adjustment: Yes Base: Solid Aluminum polished 350mm Wheels Type: Durable PU Caster