Cercle Executive is an office armchair designed by Lievore, Altherr and Park for Poltrona Frau. Seat and backrest structure in moulded polyurethane foam with metal insert. Padding in differentiated density polyurethane foam for the areas of greatest comfort and polyester wadding quilting. Base in polished aluminium or painted black. Under-seat protective cover covered in leather or hide.Cercle is a collection of chairs with sober geometries and a strong scenic presence in the workspace. The synchronised mechanism is integrated into the monocoque and is further optimised by Poltrona Frau to offer high levels of comfort. The Cercle chair is available in different models, Managerial, Meeting, Visitor, President and Executive, and it is possible to opt for the fully upholstered version in SC leather or the double upholstery in SC leather and Executive Saddle leather.Base: five spokes with a column that connects to the casing lacquered to match the finishing of the base. The column of the Managerial armchair is equipped with gas springs to adjust the height.In this version: Circle Executive upholstered in Pelle SC 20 Inchiostro - Base finish: Aluminium black.Supports: Soft, self-braking “W” type swivel castors. FUNCTIONS:360° rotationSeat height adjustment“Syncron” movement with adjustment of the inclination angle and the oscillation resistance of the backrest and seat.