We researched and tested patio umbrellas in a range of styles, including standard and double-wide models—great to shade dining tables—and fun retro options. As for shape, while round umbrellas are the most popular—like —there are also square and rectangular patio umbrellas, which look a bit more modern and may be a better bet depending on the shape of your patio. Patio umbrellas generally start at roughly 5 feet wide and go all the way up to 13 feet wide or more. Some patio umbrellas have a crank that slowly opens up the canopy, while others have a slider attached to the pole, similar to handheld umbrellas. Also, keep in mind that you’ll likely have to buy a base separately, as the majority of patio umbrellas don’t come with them.