This version of &Tradition’s eco-friendly shell chair marries comfort and convenience with full upholstery that includes a cushioned seat as well as a mobile swivel base on castors. Designer Hee Welling recasts the classic Scandinavian molded seating in 100 percent recycled plastic that then comes completely custom-clad in a choice of premium fabric or leather over a layer of HR foam to go with its sleek lines and ergonomic support. The swivel base with rolling castors is made from extruded aluminum and is available polished, bronzed or powder-coated black.