Fixed base: supports in polyester-epoxy powder coated steel, white or black, and legs in Canaletto walnut or aniline-dyed ash oak-stained, finished with transparent open-pore acrylic paint. Feet in thermoplastic. Swivel four-spoke base: aluminium polished casting or epoxy-polyester powder coated, white or black, with swivelling mechanism in steel and thermoplastic feet. Swivel five-spoke base: aluminium polished casting or epoxy-polyester powder coated, white or black, with pneumatic height-adjustment mechanism and swivel thermoplastic castors. Body in TECH® high-density structural polyurethane, white or black. Matt surface and quilted pattern on the external surface. Seat cushion (optional): padding in foamed polyurethane and polyester wadding, covered with polyester velveteen. Anti-slip lower surface. Removable cover in cotton fabric (C2 Cotone 2011 / only for UK: D Pause4 by KVADRAT), dry washable.