MF Studio 9ft Patio Umbrella with 8 Sturdy Ribs with Push Button Tilt/Crank Outdoor Market Table Umbrellas Constructed with the powder coated steel pole and 8 heavy-duty steel ribs, this umbrella has a good strength and durability, Made with 180g polyester fabric, weather-resistant, UV-resistant and water repellent, providing up to 99% UV protection, a smooth-turning crank make you easy to open or close the umbrella .You can enjoy the weekend with your friends, family or customs under the patio umbrella.