Calder, named after the famous artist Alexander Calder renowned for his abstract mobile sculptures, consists of four different pouf units and one aluminum tray. Calder, which allows pouf units to be connected to one another in various ways, enables its user to create a sheer number of different combinations. The modules are connected to one another with special fittings and thus they can be shaped according to various requirements and wishes. Ready-to-use mounting holes have been opened underside the relevant units of all pouf modules by considering any various combination options.