Size: 36.6 X 36.6 X 8 inches. ONLY for PURPLE LEAF double top offset patio umbrella. ESPECIALLY for 11 feet square umbrella, 12 feet round umbrella and 9 X 12 feet rectangle umbrella. Made of PP plastic, real hard and weather resistant, maintain a long period life 3D surface design, more fashionable Water and sand can both be injected, about 280 lbs with fully injected Please feel free to come to us if you have further problem or missing parts with this product.

With this umbrella base, your offset patio umbrella can be stand in any place.

With this umbrella base, your offset patio umbrella looks more fashionable.

With this umbrella base, your offset patio umbrella gains more stability.

With PURPLE LEAF products, your garden life becomes more wonderful.