Take our 11 ft outdoor umbrella for patio with you to protect you from sunburn and add a splash of color to your outdoor shade. This umbrella features a removable octagonal polyester canopy with eight steel ribs that extend out via a crank lift on the pole. Air vent on top lets fresh air flow . while sewn-in hook and loop fasteners keep the umbrella closed when not in use. No matter the season . this umbrella is made ready for years of enjoyment. Umbrella base is not included.