This 4-Piece Outdoor Cantilever Umbrella Block Weight Set is a block solution designed specifically for cantilever umbrellas. Each weight block can be filled with 132 lbs. of water or 176 lbs. of sand, ensuring that your cantilever umbrella is stable and will not fall over. The kit includes four separate weight blocks to easily adjust the stability of the umbrella as needed. The umbrella base is made of weather-resistant material that is durable and UV resistant, keeping the color vibrant even after extended outdoor use. Suitable for outdoor, lawn, patio, poolside and many other scenes. This umbrella base is easy to install, easily fix the umbrella pole to ensure the parasol is stable and not fall down. Choose this umbrella base set to have a safe and stable parasol while enjoying your outdoor time. Color: Black. Material: Plastic.