STYLE——ZAMGIC Classic Retro Photochromic Sunglasses,Blue Light Blocking Glasses.Color Change Lenses for Day and Night.
PHOTOCHROMIC LENSES ——This photochromic lens are based on the intensity of sunlight and ultraviolet light, darkening the light grey lens.The stronger the light, the darker the color of the lens is,can protect the eyes without disturbing your perception of color.(Can not change color if you are sitting in shadows or wearing a hat).
PROTECTION——These Photochromic Lenses can block 99% or 100% of UVB and UVA rays. When you go out,offering 100% UV protection.