TOG Tribrid; Plastic lenses that have been developed by combining Trivex lenses and high index lenses to produce Tribrid with the special properties of clear > light > strong > thin.
     1. Clear, with the Abbe value of 41
     2. Light, light and comfortable wear with the specific gravity of 1.23 g/cm3
     3. Strong, tough and can withstand high impact
     4. Thin, with the refractive index of 1.60