The best windsocks on the face of the planet? That's quite a claim! Consider these features: single hoop frame assembly, trailing vane design, 100% stainless steel frame, fasteners and washers, permanently lubricated bearings, waterproof synthetic sock material, double stitching of all seams, UV resistant, calibrated for full extention at 15 knots, heavy duty at 18 knots. Additionally, our frames are designed so that the hoop can be opened and the sock can be slipped onto the frame without the need for grommets. Windtek windsocks are made in the USA from the best materials available!