Spy Bias Goggle Lens

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Spy Optic Bias Goggle LensOvercast / Partly Sunny Lens Low profile, 6-base ARC(R) spherical Gemini?dual lens w/ anti-fog and anti-scratch protection 100% UV protection GEMINI LENS TECHNOLOGY: This patent pending lens system joins and completely seals the dual lenses with a polyurethane-based glue. This airtight chamber between the lenses is dehumidified and depressurized to simulate a constant high altitude environment resulting in the elimination of between-the-lens fogging and altitude-induced lens distortion. Gemini(R) technology is used exclusively on ARC (R) spherical lenses.