Make Your Outdoor Space Safer & More Stylish! Our heavy-duty patio umbrella base offers universal compatibility with most umbrella pole sizes using 2 adapters (1.57"/1.91", 40/48.5 mm) and dual locking knobs, so your shade stays stable at all times. Engineered with a refillable reservoir, it can be loaded with water, sand, or a mix of both for stable weighted support. The innovative half-round shape design fits snugly against any wall to maximize patio space and features a convenient built-in handle for swift repositioning or storage. Crafted from high-quality HDPE and fortified with a strong metal tube, this unit remains waterproof, sun-proof, and reliable for years of use. Setup is quick and tool-free, and its lightweight build makes off-season storage effortless, ensuring your patio is ready for any occasion. (Note: The umbrella is not included)