Vortex represents a revolution in umbrella engineering— designed and wind tunnel-tested to withstand wind gusts up to 75 mph without flipping inside out. It’s quite simply our greatest wind technology ever. The spacious 62-inch canopy offers plenty of protection for two people. A fiberglass frame is lightweight yet durable. And the Anti-Inversion Struts® and tip-tensioning system make it a truly windproof golf umbrella. it also offers UV protection in the form of a UPF 15 rating. All that, in the timeless look of a stick, make this umbrella the epitome of style, practicality, and protection in weather of any kind.