Extra-Large Shade Area :This 15 ft wide patio umbrella features a double-sided design, which gives you maximum shelter that brings you double shades for your outside enjoyment. Additionally, this patio umbrella with large shade is great for garden, backyard, poolside and beach.High Quality Polyester Canopy：The canopy is made of high quality fabric, which is fade-resistant, weather-resistant and durable enough for outdoor use. In addition, the canopy with premium material is great for UV protection and works well for water resistant.Sturdy Construction：This frame of this patio double-side umbrella made of thick steel with powder coated, which is anti-rust and great for outdoor use. Moreover, 12 steel ribs provide optimal support for the large double-sided canopy. Even better, safe latch design for better-fixed canopy.Convenient Crank System ：This outdoor double-side umbrella has a crank handle, which can control the opening and closing of the umbrella. You can easily open and close the umbrella by rotating the rocker. It is even easy to use for kids and the elderly.Wind Vent：It has three air vents at the top to stop the wind pulling the parasol upwards. It also helps to keep you cool when you're sitting beneath the canopy while adding extra stability.