Sand Filling: It is 30% denser than the water-filled base and avoids the evaporation of the water-filled base over time, so there is no need to refill it, saving time and effort and ensuring the umbrella stand. High Quality Material & Cleaning Easily: The base of this patio umbrella stand is made of strong and durable HDPE material, which can resist all kinds of weather elements. With a sunflower pattern, it's easy to clean while adding elegance to your patio for a timeless look Secure and stable: FRUITEAM Outdoor market umbrella base stand is extra thickness and heavy for greater stability, helps keep patio and market umbrellas sturdy and in place Hand-tightening Rotary Knob: The swivel handle is necessary to secure market umbrellas to provide the stability of the FRUITEAM base. We highly recommend that you use a patio umbrella stand in combination with a patio table for extra support for your outdoor umbrella. Worry-free customer service: If you have any questions about FRUITEAM outdoor patio umbrella base, please contact us, and we will do our best to solve the problem for you FRUITEAM Heavy-Duty Umbrella Base - Stylish Sand-Filled Stand for Market and Patio Umbrellas - 40 lbs Weight Capacity for Stability