Add interest and dimension to your display with concrete look risers. The 12" pedestal is made for both indoor and outdoor use. Concrete risers are available in several sizes. The concrete riser is made for both indoor and outdoor usage. This display cube serves double-duty as a planter or a product riser. Fiberstone is a cement-like mixture of poly-resin, fiberglass, and stone powder. If being used indoors we recommend a plastic liner. There is no drain hole for outdoor plants.