Our 21.5'' round weighted umbrella base weighs 40 lbs, providing solid support for your outdoor umbrella. And designed with 2 adapters of 1.5'' and 1.9'' diameter, the umbrella stand is suitable for most 9 ft market umbrellas and patio table umbrellas. More than that, our heavy-duty umbrella stand is made of premium resin material, which can endure outdoor environments without aging or fading, ensuring long-lasting durability. And with its exquisite pattern and classic black colors, this weighted umbrella base goes well with any decor theme.