Stable Base Design:; Includes two sandbags and a removable base for extra stability. Add sand as needed based on weather to keep the umbrella securely in place.Anti-Corrosion Coating:; Powder-coated metal surface resists oxidation for long-lasting durability in various weather conditions.Extra Large Sunshade Area:; The 15-foot dodecagon canopy offers ample shade, perfect for large families and outdoor gatherings in your yard, garden, beach, or patio.Convenient Hand Crank:; Easy-to-use hand crank allows smooth opening and closing of the umbrella, suitable for diverse occasions.Double-Layer Thickened Fabric:; Reinforced fabric at connection points and rib ends enhances durability and wear resistance, ensuring the canopy stays in excellent condition outdoors.