Broad compatibility: Fits umbrellas within 3 m and poles with diameters of 1.38 , 1.5 , and 1.89 , secured easily with two knob screws, ending the search for a matching umbrella base for your different umbrellas Fillable design: Fill the base through the inlet with water for 88 lbs. or sand for 134 lbs. of weight, giving your patio umbrellas or double-sided umbrella a solid foundation and peace of mind outdoors Effortless mobility: With four smooth-rolling wheels, this umbrella base glides across your patio or poolside. All wheels have safety brakes, letting you lock it securely in place for stable shade anywhere Built for outdoors: The body is made of thick HDPE plastic while the tube is powder-coated metal. This umbrella stand is designed to handle various weather, a lasting partner for your garden Patio Umbrella Base Info.: Overall Dimensions: 21.5 L x 21.5 W x 15.7 H. Bottom Base Dimensions: 21.5 L x 21.5 W x 5.9 H. Weight After Filling: 88 lbs. (water), 134 lbs. (sand). Fits Umbrella Pole Size: 1.38 Dia. , 1.5 Dia. , 1.89 Dia Item Weight 13 pounds Manufacturer Aosom LLC Item model number 84D-455V00BK Product Dimensions 21.5 x 21.5 x 15.7 inches