Oakley Nighthawk Biozone Snowboard/Ski Pants Hydrogauge® 15 technology combines with zip vents with mesh insets at the inner thigh and critically taped seams to maintain airflow while blocking out sleet and snow. BioZone™ technology promotes moisture management, insulation and comfort where you need it Inner thigh zip vents with mesh insets offer adjustable ventilation and temperature regulation Slim Fit Pro Rider Series Sizes available: XL - 2 available XXL - 1 available