Mitsui is born in Fukui, Japan—the heart of the nation’s renowned eyewear craftsmanship. The brand embodies timeless elegance, rooted deeply in Japanese tradition. Each frame is brought to life by master artisans and skilled craftsmen using time-honored techniques passed down through generations. This commitment to heritage defines the spirit of refined design that is uniquely Mitsui.

Every Mitsui frame is a result of meticulous handcraftsmanship and a quest for perfection. Each pair undergoes a detailed, hand-finished process to ensure flawless construction and superior beauty. This rigorous approach is backed by uncompromising Japanese quality control and strict inspection, guaranteeing that every single frame meets the highest standards of precision, reliability, and performance.

Mitsui frames are engineered for exceptional lightness, strength, and comfort. All metal components are crafted exclusively from pure titanium, chosen for its superior durability and enduring performance. Combined with premium Japanese acetate and injection plastic, these high-quality materials ensure reliability and a flawless finish, perfectly blending artistry with engineering excellence.