This patio umbrella opens quickly and easily with the crank lift. The sturdy and supportive steel pole is topped with polyester fabric. Features 100% Polyester canopy fabric features fade-resistant, water repellent, and sun protection 8 Steel ribs provide stronger support than standard round poles. Air vented top enhances umbrella stability. The convenient crank open system makes it easy to open and close Abble 11ft Red Patio Market Umbrella, Fade Resistant Durable Construction: 8 steel ribs provide stronger support than standard round poles, ensuring stability and longevity Enhanced Stability: Air vented top enhances umbrella stability, making it suitable for various weather conditions Easy Operation: The convenient crank open system allows for quick and effortless opening and closing Quality Canopy Material: Made from polyester, offering fade resistance and water repellency UV Protection: Provides UPF 180 protection from harmful sun rays