Using this umbrella base is a breeze. First, find a flat and stable surface where you want to place your cantilever or Roman umbrella. Then, roll the base to that spot using the built - in wheels. If you want to add weight for extra stability, you can use the two inlets to fill it with water, sand, or both. When you need to move the base again, simply drain the water or sand through the two outlets. As for maintenance, it's really easy. Just grab a water - based cleaner and wipe the base clean. One thing to keep in mind is to avoid hitting the base against hard objects, as even though it's heavy - duty, a strong impact could potentially damage it. Also, if you live in an area with extremely cold winters, it's a good idea to empty the base to prevent the water from freezing and causing cracks.