Balance style and function in your patio with this 4-piece offset umbrella base! Each plate is made from high-density plastic Uv- and weather-resistant Hdpe plastic withstands rot and wear over time. This piece features an easy assembly: 4 plates are connected by 4 pins to secure your umbrella in place, while easy-to-fill spouts make it a breeze to add sand or water to weigh it down. Done for the season? Empty the 19in x 19in plates, stack, and store them until the next sunny day! An umbrella is a lot less valuable without the perfect stand to keep it standing tall.