Shelf SANDSTONE 70x40xH100cm, grey polystone, wooden frame. The shelves are made of composite material, which is a mixture of natural stone powder, fiberglass, sand and polymers. In appearance like natural sandstone, polystone is lightweight and weather resistant. The shelf frame is made of acacia wood. SANDSTONE series is suitable for both indoor and outdoor use. STORAGE: at the end of the summer season, we recommend storing the shelf indoors. Use a dry and well-ventilated room for storage.