☂️Easily move and position your patio umbrella with this wheeled umbrella base, featuring four smooth-rolling wheels and two locking wheels for secure placement. Its refillable reservoir holds up to 123 pounds of sand or 37 liters of water for customized stability, while dual tightening lock umbrella poles from 1.5 to 1.9 inches firmly in place. Designed to fit most market umbrellas 6 to 12 feet, this contemporary base blends with any outdoor decor and rolls effortlessly across decks, patios, or seating areas. A patented, space-saving design that combines mobility, strength, and convenience. Color: Black. Material: HDPE (High Density Polyethylene).