The Tau Dolium planter is made from fibreglass, a composite material of fibreglass and synthetic resin that is lightweight yet strong. The structure of the planter is reminiscent of concrete. This planter is suitable for both outdoor and indoor use. Thanks to its frost resistant properties, the planter can remain outside during cold periods without getting damaged. In addition, the planter is UV resistant, which protects it from discolouration and damage caused by sunlight.