The best way is to measure your glasses is in Millimeters total width x total height. As a general rule add 2mm's to the height and width to help make up for how the flip-up attaches to your glasses.
Amber Square Non Polarized Flip Up
$ 16.25
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Non polarized UV400 amber copper driving lens flip up that clips onto a square shape...
Non Polarized Round Flip Up Sunglasses
$ 16.25
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Semi round non polarized flip up sunglasses. The lenses are polycarbonate, scratch resistant and rated...