【Ships Today】 Purchased from Murasaki Sports. Used twice. 【Model Number/Product Number】FGL 003-1 (￥5940) 【Frame】 Matte Black 【Lens】 Brown Polarized & Photochromic ※Also includes a separately sold hard case from the same brand (￥2178). The photochromic lenses change color depending on the amount of UV light they are exposed to. Outdoors, the lens color changes from brown to a slightly darker brown in about 5 to 10 minutes. When you go indoors, where there is less UV light, the slightly darker brown returns to the original brown in about 5 to 10 minutes. The use of spring hinges makes it less likely to hurt your ears even when worn for long periods. Features a rubber finish with a matte rubber coating.