Bought two of these. Needed immediately for event, so no time for return. One of the panel of the 8 received leaks, so water not an option for that one. The product really does not seem designed to work with the Cantilever Offset umbrella, but living with it. Sections do not want to be secured with metal brackets provided - brackets too short. Overall, seems odd that this is the base sold for the Cantilever Offset. Be prepared, with this product in place, the base for the umbrella will be sizable.