VENTILATION WITH CLEAR BENEFITS THE NIKE WINDSTORM SUNGLASSES FEATURE A CONTOURED DESIGH AND INNOVATIVE VENTILATION FOR CLARITY AND COMFORT DURING YOUR WORKOUT. BENEFITS: MAX OPTICS BY ZEISS PROVIDE PRECISE VISON FROM ALL ANGLES. SUBTLE VENTING IN THE FRAM INCREASES AIRFLOW WITHOUT LIGHT LEAKS. SPORT WRAP, 8 BASE FRAME OFFERS MAXIMUM COVERAGE. STEAMLINED RUBBER TEMPLE TIPS WITH FLOW LINES ADD GRIP. DURABLE, HIGH TENSION HINGES.