Head-to-toe warmth. Wind-blocking protection where you need it most. When temperatures drop, a regular cap just won&&';;t cut it. The WindStop(TM) Cap combines cozy HeatLock(TM) fleece with strategically placed WindStop(TM) panels to protect your forehead from biting wind. Designed for cold-weather running, it strikes the perfect balance of warmth, breathability, and lightweight comfort-so you can stay out longer, even when winter tries to get you down.