This Hampton Bay 8 ft. Square Aluminum Cantilever Offset Patio Umbrella provides the perfect amount of shade for hours of relaxation. The perfect addition to your deck, patio, or poolside lounge area, its weather-resistant polyester canopy is vented for comfortable air circulation and is supported by eight sturdy steel ribs. The reliable crank function provides easy maneuverability, helping deliver the right amount of coolness to your outdoor space for the ultimate relaxation--simply open, close or adjust the angle of the umbrella to meet your needs. It includes a plastic support base that is weighed down by sand. It is recommended that you use 178 lbs. of sand (sand sold separately).