Tracer Pro Polarized ShadesBuilt for the hours when the sun fights back. The Tracer Pro wraps your field of vision in high definition polarized lenses that cut glare without cutting clarity so you see exactly what's ahead, nothing more, nothing less. Gripsure technology locks the frame in place through every stride, sprint, and switchback. Lightweight enough to forget you're wearing them. Tough enough that they won't let you. HD polarized lenses with full UV protection Gripsure