Scope Switch Blade Smart Vue (Photochromic) Spare Lens. These are spare lenses for the sunglasses. The Switch Blade Smart Vue lenses from Scope Optics have photochromic shade changing ability that changes to all light conditions. 

The spare lenses (Photochromic 180SV-SP) are to fit Switch Blade frames and have advanced anti fog/scratch coating for longer lasting lenses.

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