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Fly Jacker Handmade Zyl styles are milled from Zylonite blocks. All Black Flys Handmade frames are carefully handmade, using precision cutting and grinding tools and a high level of craftsmanship. Black Flys glass lenses are of the highest optical quality giving optimum clarity, free of distortion. This ground and polished lens is heat tempered for impact resistance.
Shade Factor 3
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