Streamlined style for smaller faces offering optimal coverage the Julbo Frequency Reactiv High Contrast Sunglasses are built for functionality and style. The Frequency Reactiv high contrast photochromic transition lenses are able to seamlessly adapt to changing light conditions, ensuring optimal vision clarity from pre-dawn till dusk. The lightweight and comfortable frame offers a secure and comfortable fit, while adjustable features ensure stability and prevent slippage. Set your own pace in the Julbo Frequency Reactiv Sunglasses.