Features: Base Dimension: 36"L × 35"W × 6.7"H. . Only for RURPLE LEAF 8' × 8and 9'x9' square umbrella single-top cantilever umbrellas. Sturdy Material: The patio umbrella base is made of HDPE, which is hard and weather-resistant. Large Capacity：It is recommended to add at least 73.4lbs of sand and 66.8lbs of water to keep the cantilever umbrella stable. Exquisite Craftsmanship: 3D surface design is more fashionable and textured. Considerate Customer Serivice: Please feel free to come to us if you have further problem or missing parts with this product. Ideal Umbrella Size: 10' x 10' : Please search 43412519 9' x 11' : Please search 43412518