This VredHom cantilever umbrella not only provides great shade, but also provides illumination at night. The double-top umbrella is designed to increase air circulation, and the crank handle allows for an adjustable tilt angle and the ability to rotate 360 degrees to block sunlight in all directions.Equipped with a base consisting of four black slats that are rust and water resistant, the weight of the base can be increased by adding water and sand. The umbrella base can hold approximately 220 pounds when filled with water and 240 pounds when filled with sand. When sand and water are mixed together, the weight is even greater. The increased safety of the base makes the umbrella less likely to tip over.It also comes with a solar panel to make your night life more colorful. Set includes one patio cantilever umbrella and one base Umbrella： Base： Umbrella： Base：