Why Trilogy Trivex? The strongest optical material Extraordinary impact resistance Lowest internal stress The lightest optical material 1.11 g/cm3 density is 20% lower than standard 1.50 lenses Harmful light protection Blocks 100% UV light provides extra protection against blue light* *applies to Trilogy Transitions® VII Signature and Trilogy Transitions® XTRActive Lifetime warranty against breaking in any frame.

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