These are polarized sunglasses! Includes a polarization test card. The polarization test card is a tool that allows you to quickly verify the authenticity of the lenses (presence of polarization function) simply by looking at the card while wearing the polarized sunglasses. Hidden letters and patterns that are invisible to the naked eye will appear when viewed through a genuine polarized lens. Polarized Sunglasses, Photochromic, UV Cut, Eyeglasses, Driving, Sports, Fishing [Product Details] Size: See photos Frame Colors: Black Weight: Approximately 26g Material: Aluminum + Magnesium Alloy UV Cut Rate: 99%・UV400 *Polarization Function Cuts sunlight and reflections, Reduces glare, Provides a clear and crisp view. *Photochromic Function Changes color in response to UV light Good visibility both indoors and outdoors In bright places, The lens color becomes darker And cuts UV rays In dark places, the lens color becomes lighter And visibility is clear. The simple design makes it suitable for any purpose, And can be used in any situation. You can use them without taking off your sunglasses in tunnels, Making them ideal for driving, etc. They reduce visual fatigue, And protect you from UV rays. These sunglasses automatically change lens density by detecting light.