Base Dimension: 40.6"L × 39.4"W × 5.4"H. Only for PURPLE LEAF 10' × 13' and 11.5' x 8' umbrella single-top cantilever umbrella. 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 221.7lbs of sand or 132.3lbs 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. This PURPLE LEAF umbrella base is made of HDPE. It can be easily filled and cleaned up. Only for PURPLE LEAF 10' × 13' and 11.5' x 8' one top cantilever umbrella.