Size: 36.61 X 36.61 X 8.01 inches Fill at least with sand up to 50% capacity, then add around 280 lbs of sand and water to fully complete Crafted from PP plastic, it combines strength and weather resistance, contributing to a prolonged usage period The 3D design and sharp textures allow for quick and easy cleaning ONLY for PURPLE LEAF patio large umbrella. ESPECIALLY for 11 feet square umbrella, 9 X 12 feet rectangular umbrella and 12 feet round umbrella Protection Plan: 1 year for offset umbrella base With this umbrella base, your offset patio umbrella gains more stability.