$4.17 per wear · worn 30 times
The more you wear it, the lower it gets.
From the brand’s own pages, read October 5
Say what you think, then see how everyone else read it.
An original production Kata frame from the 1990s, preserved in new old stock condition with its original demo lenses. The Japanese-made Filament 3 features a refined rectangular silhouette in a mahogany finish, with titanium construction details and original archive markings. Frame Model: Filament 3 (Mahogany) Decade: 1990s Country of Origin: Japan Lenses: Original Demo Lenses (Ready for custom lenses) Condition: New Old Stock (Deadstock). Never worn. Original lenses. Measurements: 51-18-132 Historical Context KATA is a Japanese eyewear collection first introduced in the mid-1990s, with surviving vintage examples marked Made in Japan dating from the period. The collection was developed around four principles: simplicity, innovation, responsibility, and authenticity, with an emphasis on form, finish, and material rather than excessive ornamentation. Its aesthetic draws from classic vintage styling, combining retro silhouettes with streamlined temples, refined metalwork, and carefully considered acetate details. Japanese-made examples from the 1990s include both metal and acetate constructions, reflecting the precision and material quality associated with Japan’s eyewear manufacturing tradition.