The ironic title plays with two contrasting concepts: the idea of static nature evoked by the common sense of the sitting function and the strong dynamism of its form. This seat is designed in white marble, but its curves "play" well even with marbles of different colors, like a glossy black, to enhance its sinuous and sensual shapes. At both ends two regular blocks for "classic" seats, connected by a curved central part, for an "informal and free" seat.