The julbo aero spectron 3cf lens sunglasses designed for those who seek out the most demanding of activities be it a vertical mile or 100 mile trail race the aero is uncompromising when it comes to performance and comfort the zebra and zebra light photochromic versions guarantee a wide clear field of vision regardless of light levels the suspended lens construction provides outstanding ventilation even in the most intense situations the air link temples provide a secure and comfortab