Support your deluxe patio umbrella with the umbrella base weights. Constructed of durable plastic and made to withstand the elements of the outdoors. Designed and recommended to fill with 15L of water to add the additional weight equal to four pavers/stones creating a sturdy supportive base for your umbrella.Finish: Dark GrayMaterials: PlasticHeavy duty dark gray plasticFill completely with water to create weight equal to four patio stonesIncludes four pieces with four attaching hooksEasy to assembleSpecifications:Overall Product Dimensions: 3"" H x 40"" W x 40"" DOverall Product Weight: 18 lbs