Durable Construction: Made from high-quality, long-lasting high-density plastic with a metal handle, ensuring enhanced durability and weather resistance. Fillable Design: Features removable caps for easy filling with water, cement, or sand to weigh down the base. Weight Capacity: Can hold up to 132.4 lbs of water or 176.4 lbs of sand, providing substantial stability. Wind Stability: Designed to be filled with dry or wet sand to prevent the umbrella from tipping or flying away in windy conditions. Offset Umbrella Anchor: A 4-piece square plate set specifically designed to perfectly anchor cantilever patio umbrellas.