【Brand】Kaneko Gankyo (Kaneko Optical) 【Model Number】KC 【Color】BLS 【Lens Color】Photochromic Lens: Brown 【Size】46□23 【Country of Origin】Japan The "KC Series" is an abbreviation for Kaneko Gankyo Celluloid, and as the name suggests, it uses celluloid as the material. Unlike acetate, which is currently used by most manufacturers, it requires very high skills and many processes to handle. The unique feel, texture, and deep color and luster that change over time, which cannot be achieved with other materials, are its greatest charms. Thank you. Sunglasses Oliver Peoples Oliver Peoples Kaneko Gankyo Kaneko Megane Kaneko Megane Kaneko Optical Eyevan Eyevan 7285 Moscot MOSCOT MASUNAGA