Support your patio umbrella setup with this half-round, fillable umbrella base designed to sit flush against a wall for space-saving placement. The reservoir can be filled with water, sand, or a sand-and-water mix to add weight for everyday outdoor use, and a top-fill port with a plug makes filling and draining more convenient. Two included adapters fit common umbrella pole diameters (1.57"" and 1.91""), and the adjustable knobs help hold the pole in place once installed. Made from Hdpe with a metal support tube, this base is lightweight when empty for easier moving and seasonal storage. Overall size is 20"" x 12.5"" x 14.5"", and assembly is required.