Dimension: 35.4"x 36.2"x 7.8" inches. HDPE material: Made of durable HPDE plastic, which is highly impact resistant, UV-protectes and stable. Various Fill Options: The whole base provides approximately 280 lb weight when filled with water. Also, you can fill with sand and the mixture of two. This umbrella base is only suitable for PURPLE LEAF 11 feet square umbrella, 9 feet X 12 feet rectangle umbrella. With this umbrella base, your offset patio umbrella can be stand in any place. With PURPLE LEAF products, your garden life becomes more wonderful.