Women's Polarized Photochromic UV400 Brown Frame / Yellow Lens These are cool, polarized, photochromic UV400 sunglasses. The lenses are yellow. They significantly improve visibility in poor conditions such as at night, in fog, or during snowfall. Photo 2 shows an example of them being worn. Beautiful! Photo 3 shows them after being exposed to a UV lamp for about 10 seconds. The lenses darken in response to UV light. Photo 5 shows the decorative accents on the sides. The hinges are also well-made. Accessories 　Sunglasses 　Glasses case 　Pouch I also have black and pink ones available. Polarized Function Eliminates glare and effectively reduces strong light, reflected light, and scattered light. It makes chaotic light parallel, making your vision clearer and softer. See the world more clearly through your eyes. Suitable for travel, driving, fishing, skiing, rainy weather, and outdoor sports. Photochromic Function These lenses change their tint based on the amount of UV light. In bright sunlight outdoors, they become dark like sunglasses, reducing glare. Conversely, in areas without UV light, such as indoors, they become clear like regular glasses, ensuring bright vision. The degree of color change also varies with temperature; they will appear lighter in hot summer weather and darker in cold winter weather. UV400 UV cut rate is 99%. Frame Material PC (Polycarbonate): Polycarbonate is a plastic that is incredibly strong, resistant to heat, and possesses unique properties. It is also resistant to UV degradation, making it more suitable for outdoor use than general plastics. Thank you for your consideration. *Please check my profile for transaction rules. Please read them before asking questions or making a purchase. #CartivaGameGloves #SunglassesCarbonStylePolarizedUV400 #PELine9Strand #Plat #HeatShrinkTubeGlow #HandleKnob32mm #HandleKnob35mm #HandleKnob38mm #RodBeltAndTipCover #RodCarryBelt #IndianaBlade50pcs #MetalVibe106mm35g5Colors