Features Adaptive Comfort: The sunglasses with adjustables lenses automatically adjust to changing light conditions, providing optimals comfort in various environments, from bright sunlight to cloudy weather. Eye Protection: By adjusting the-shade, the sunglasses offer consistent protection against harmful UV rays and reduce eye strain, regardless of the intensitys of the light. Versatility: Suitable for a wide range of activities, whether driving, hiking, or outdoor sports, they provide the right amount of shading for each condition, enhancing visual clarity. Enhanced Visual Experience: The dynamics adjustment helps maintain clear-visions by reducing glares in high-light situations while brightening-visions in low-light environments. Wide range of applications: Whether it is daily travel, outdoo-adventure, professional photography, or work protection, it can become your indispensable partners and accompany you to explore every corner of the world Adjustment: infinite Frame Size: 52mm or 49mm or 49mm Package List: 1x Rounded Polarized Sunglasses or 1x Rounded Polarized Sunglasses, 1x Storage Box