Support your Atlin Designs patio umbrella with the umbrella base. Constructed of durable plastic and made to withstand the elements of the outdoors. Designed and recommended to fill with 22L of water or sand to add the additional weight needed to create a sturdy supportive base for your market umbrella.Finish: Dark GrayMaterials: PlasticHeavy duty dark grey plasticDesigned to be filled with water or sandFor use with any of our Atlin Designs PPU umbrellas for additional supportHolds most umbrellas with a pole diameter up to 50mmSpecifications:Overall Product Dimensions: 6"" H x 18"" W x 18"" DOverall Product Weight: 4 lbs