Caldera was created by the design agency Akantus for Carl Mertens.
The ashtray consists of satin-finished 18/10 stainless steel and impresses not only with its simple design, but also with its perfect functionality. The tapered upper part ensures that the ash and the cigarette filter fall into the inner part of the ashtray. To remove the ash, the upper and lower parts can simply be split away. It is also simple to clean the ashtray.