This model pays tribute to Japanese eyewear history thanks to the precise engraving work on the temples. Yukiko is unique due to the polarized sun clip that perfectly fit the frame. This clip-on has category 2 polarized lenses with a triacetate film, made by a family business in Sabae, Japan with an incredible experience in lenses. As a signature, the kanji meaning Minamoto is delicately stamped on the upper bar of the clip as well as on the end tips.