Stabilize your outdoor sun shelter with the half round umbrella base. Featuring a distinctive semi-circular profile, the umbrella stand fits flush against exterior walls or deck balustrades, providing a perfect shading answer for narrow balconies and restricted garden nooks. Crafted from Hdpe boasting a diamond pattern, the umbrella base is built to endure harsh weather conditions without losing its luster or structural integrity through the seasons. The fillable base can be loaded with sand or water, allowing users to calibrate the ballast weight for dependable umbrella stabilization. Engineered for broad utility, the semi-round foundation comes equipped with 2 adapters and a rotating knob, accommodating standard 1.5"" and 1.9"" diameter umbrella poles effortlessly. Installation is remarkably simple and tool-free, while the integrated handle makes relocating or stowing the unit a seamless task. The patio umbrella is not included.