Mad Chair Swivel was designed in 2014 by Marcel Wanders for the Italian brand Poliform. The chair has a rotating metal base that elegantly contrasts with the upholstered seat. The Mad Chair Swivel is available in several versions, so you can choose between fabric or leather and whether or not you want an armrest. A polyurethane upholstery is under the chair's cover. The design of the Mad Chair Swivel is characterized by its harmonious design and soft shapes. In addition to this version, there is a similar chair in the same range with a more traditional wooden base.