Anchor any of our patio umbrellas with our exclusive base that allows umbrellas to stand without additional support. This attractive black base easily fills with water, adding all the support a patio umbrella needs. No table required! Wide bottom provides greater stability than typical bases. Long pole receptacle can accommodate umbrella poles that have 1” (25mm), 1.5” (38mm), or 2” (50mm) diameters. The base weighs approximately 6 lbs when empty - much lighter than similar units on the market, making it easier and less expensive to ship. When filled with water, however, it weighs up to 50 lbs, to secure patio umbrellas against light winds!