Masunaga Optical was the founder of the optical industry in Fukui, Japan in 1905. Meticulous craftsmanship is evident in the countless steps of the manufacturing process. Masunaga does not rush the process as each pair can take as long as 6 MONTHS to make. No shortcuts are taken; no compromises are made in the creation of each MASUNAGA frame. Featuring beautifully hand polished Japanese a polished Japanese acetate, durable seven barrel hinges, distinctive silver rivets, MASUNAGA collection confirms what Masunaga Optical has achieved over the past century.