The planter from the Tau brand, part of the Rectangulum collection, is made from Fiberglass, a composite material consisting of fibreglass and synthetic resin, which is lightweight yet strong. The structure of this planter is concrete. Due to the properties of the material used, the planter is suitable for both outdoor and indoor use. The planter is frost resistant, which means it can remain outside during cold periods without being damaged. In addition, the planter is UV resistant, meaning the planter is protected against discolouration and damage from sunlight.