Original KD's Motorcycle Sunglasses Auto-Darkening Photochromic Light-Adapting Day Night UV400 Protection

Wear glasses that can tell what's going on around you when you work, ride, or just hang out.    The Original KD's Photochromic Motorcycle That Darkens on Its Own  Glasses have lenses that change color when light hits them.   On the inside or at night, they're lighter than when they're outside in the sun.    It changes based on the light, so you don't have to switch glasses during the day.    The photochromic glasses change color when UV light hits them.   As you wear them, they slowly reach their full darkening power.    They stay clear when there isn't much light.  To cut down on glare and shine, they get darker when it gets bright.    A straight hit of UV light is all that photochromic glasses need to change color.  They won't work well behind full-face masks or windshields that block UV light because of this.    They might not block out as much sun when it is very hot outside because they are transitional.    Bike fans like these glasses because they have the classic KD shape, which is thin.   As they stay on your face for a long time, they feel good.    They protect your eyes from UVA and UVB rays with UV400, so you can ride during the day.    You can use it every day to drive, relax, or work outside when the light changes.