Constructed with thick powder-coated steel pole(1.9") and 12 heavy-duty steel ribs, this umbrella has good strength and durability. The umbrella's canopy is made of 100% Fabric polyester, and it is UPF50 certified to diffuse sunlight. A smooth-turning crank make you easy to open or close the umbrella. This 15ft patio umbrella will provide an ample shade to keep you cool and protect from hot sun in the summer days. When you are not using it, the umbrella cloth has a rope that holds the umbrella cloth well. 3 vents on the top give you more coolness and safety because it allows airflow and reduce wind pressure.

Summit Living 15ft Double-Sided Patio Umbrella with Base Large Outdoor Table Umbrella Beige.