This heavy-duty round patio umbrella base is designed to provide stability and security for your outdoor umbrella. Capable of holding up to 220 lbs of sand or 26 liters of water, it ensures your umbrella stays firmly in place even on windy days. Made from durable high-density polyethylene (HDPE) plastic and featuring a galvanized steel pipe, this base is built to last through various weather conditions, offering you long-term use. It's compatible with umbrella poles ranging from 1.5" to 1.89" in diameter, making it versatile and perfect for your market umbrellas. Important Note: When using water to fill the base, ensure the water cap is properly sealed to avoid leakage. For maximum stability, it's recommended to use a mix of water and sand.