312 Willow 1 Seat, is a chair designed by Rennie Mackintosh for Cassina, characterized by a particular twine of the backseat. Willow 1 is a curved seat with curved lattice back chair, ashwood frame stained black. The seat cushion upholstered is in a special fabric either green or beige. The particular shape, both of the chair and the design of the backseat, put this accessory in the middle between an artwork, nice to see, and a chair, functioning and functional.