Support your patio umbrella without worrying about cracking and fading. For more than 20 years, US Weight has designed and produced quality innovations made in the United States of America. The US Weight Umbrella Base is crafted with a U.V. stabilized polymer that will not rust or dent and can withstand the elements in any weather climate. This base comes empty, ready to be filled with sand or gravel. Close up the base once filled with provided plug. When filled with sand or gravel, the umbrella base weighs approximately 35-40 pounds. The umbrella base can easily be transported or relocated using the EZ Grip handle.