The Howard Leight by Sperian Polar Hood™ is a balaclava-style hood with bright green accents that provides protection from cold while maintaining optimal attentuation and high-visibility. Patented side panels help eliminate gaps between earcup and ear, reducing hazardous noise exposure. Ideal for airport ground crews, construction and other employees exposed to cold weather conditions. For use with all Howard Leight earmuffs. Fits under most had hats.