iVisible Light Transmission (VLT) measures the amount of visible light that passes through a lens.
A lower percentage means less light passes through, indicating darker lenses.
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NEW Tri-Color Microfiber Bag with Black FM Logo. All Fast Metal sunglasses already come packaged inside one of these bags. When kept clean, they are great for safely cleaning your lenses as well as securely storing your glasses to protect the lenses. Machine Washable.
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NEW Tri-Color Microfiber Bag with Black FM Logo. All Fast Metal sunglasses already come packaged inside one of these bags. When kept clean, they are great for safely cleaning your lenses as well as securely storing your glasses to protect the lenses. Machine Washable.
NEW Tri-Color Microfiber Bag with Black FM Logo. All Fast Metal sunglasses already come packaged inside one of these bags. When kept clean, they are great for safely cleaning your lenses as well as securely storing your glasses to protect the lenses. Machine Washable.
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