Rolf Benz 640 is a modern combination of cubic and organic design elements with narrow armrests and a elaborately upholstered seat. The decorative seams and a stylish base made of solid wood (oak or walnut) gives a special contemporary emphasis to the striking shell shape. Its engaging shape and comfortable luxury means that the Rolf Benz 640 qualifies both as chair and armchair – with optional comfortable swivel function. • Metal inner frame • Seat support in wood materials • Seat in polyurethane foam, built up in coordinated layers varying in height and firmness • Back and side part with foammoulded metal inner frame; the back is covered with an     additional layer of soft foam • Cover quilted underneath with non-woven polyester • Four-leg solid wood, colorless painted, options:    • Oak    • Oak black pigmented    • American walnut (against surcharge)    • American walnut, old grey pigmented • Four-leg solid wood, colorless painted, rotatable, options (against surcharge):    • Oak    • Oak black pigmented    • American walnut    • American walnut, old grey pigmented • Four-leg metal, options:    • Smooth steel, powder-coated, matt       - RAL 7022 Umbra grey       - RAL 9017 Traffic black • Four-leg metal, rotatable, options (against surcharge):    • Smooth steel, powder-coated, matt       - RAL 7022 Umbra grey       - RAL 9017 Traffic black • Cross foot metal, options:    • Smooth steel, powder-coated, matt       - RAL 7022 Umbra grey       - RAL 9017 Traffic black    • Steel high-gloss chrome (against surcharge)