Size: 21.65 x 21.65 x 18.9 inches. Note: water and sand is NOT included with the base when delivered Applicable: The umbrella base is ideal for holding most 6-11ft market umbrellas, specially for 11ft, 9' x 11.5', 10' x 10', 10 ft, 6.5' x 10' Material: Crafted from heavy-duty plastic, this umbrella base is weatherproof, UV-resistant, and waterproof, with a 3D design for easy cleaning Double Lock Design: Feature two hand-turn tightening knobs for securing umbrella to the base. The umbrella base fits table umbrellas with pole diameters from 1.5" to 1.9" Water or Sand Filling: The base can be filled with up to 141 lbs of wet sand or 82 lbs of water, with a maximum weight of 158 lbs when filled with both. This umbrella base is crafted from high-density polyethylene plastic, making it exceptionally durable. Patio umbrella base also features UV protection, ensuring it won't easily dent or fade over time. A standout feature of this outdoor umbrella base is its adjustability—designed to accommodate umbrella poles of various sizes, providing a snug and secure fit that prevents wobbling or tilting. The square base can be filled with water, sand, or a sand-water mixture for added stability, perfectly complementing most of the PURPLR LEAF market umbrellas. Installation is simple, with detailed instructions and all necessary tools included for easy setup. Ideal for outdoor use, this base for umbrella ensures your umbrella stays firmly in place, no matter the weather.