Flags can be quickly and easily changed for a new marketing campaign. A wide variety of bases makes it easy to display your Wind Sail Sign Banners indoors or outdoors.In recent wind tunnel testing of the Wind Sail product line, the Wind Sail proved its quality and durability yet again. The Wind Sail hardware withstood winds reaching up to a top speed of 63mph. The Wind Sail product line undoubtedly remains among the most durable in the industry.