this is just what i needed for my cantilever umbrella!i saw reviews with people complaining that they had to use sandbags and who knows what else to keep their umbrella upright when all they needed was to purchase this base. these are on the cheaper end of the options i saw but they do the trick! also, i used a funnel to fill with water and they were manageable enough for a smaller woman to carry outside (one by one) after filling.