The sign base is made of durable long lasting polyethylene thermoplastic. By filling the base with our base gel, water or sand, it becomes stable and can be moved with ease. Optional wheels offer an even easier way to transport your signs. Available in a variety of colors. Custom logos and signage are also available. Signs and hardware are available for an additional charge. Base size is 22"H. x 22"W x 22"D. FOB Shipping Point.