Upgrade your outdoor space with our versatile, stylish 18.9x18.9-inch umbrella base. Features four wheels for easy mobility and two locking wheels for stability. Fill with sand, water, or both (up to 100lbs) for robust wind resistance. Crafted from durable HDPE and weather-resistant steel, it fits most standard-sized umbrellas with adjustable sleeves. Its modern design complements any patio, garden, or poolside setting.