Stackable chair with four-leg base frame, in chromed, brushed or painted stainless steel. The shell is available in single-color and bi-color polypropylene (ColorBi®), standard or inverted; polypropylene with front-face upholstery in leather, faux leather, fabric or customer’s fabric; upholstered in two grades of hard leather; fully upholstered in leather, faux leather, fabric or customer’s fabric; white polypropylene shell (PO101) upholstered with removable non-washable cover in leather, faux leather, fabric or customer's own material (the chair is provided already fitted with the cover). Optional steel armrests, also with polypropylene or upholstered support, are available upon request. The versions with polypropylene shell and painted or brushed stainless steel base can be used outdoor.