A revolutionary design features an unflappable aerodynamic structure that sits effortlessly in the wind and provides maximum control, even in the most demanding weather conditions. With ribs and pole fabricated from high-quality aluminum, its uniquely tensioned canopy, combined with a flatter aerodynamic profile, no sharp edges or weak points, eliminates the major flaw of conventional umbrella design (even in light winds the fabric can tear away from a tip or come away from the ribs. When this happens, the whole structure collapses). Polyester pongee. 47" Span. 5-year global warranty.