The Pellebant 9 ft. x 11 ft. Double Top Cantilever Patio Umbrella with High Density Polyethylene Base is a powerful, elegantly designed outdoor sunshade. The unique double top structure enhances ventilation, reduces wind resistance and improves the stability of the umbrella in strong winds. The cantilevered design allows for 360 degree rotation and offset, providing flexible shade positions and adjusting the shade area without having to move the umbrella base. The base is made of high-density polyethylene (HDPE), which is sturdy, durable, UV-resistant and corrosion-resistant. The base can be filled with water or sand to add weight and ensure the stability of the umbrella. Whether for home use or commercial locations, this umbrella provides flexible shade and rain protection for a variety of outdoor needs. Suitable for outdoor patios, decks, poolside, gardens, restaurants, cafes, etc., providing comfortable shade and rain protection. Umbrella： Set includes one patio cantilever umbrella and one Base Base： Umbrella： Base：