Might be polypropionate - it only expands when heated (ya can't shrink this stuff), and the surface color is "fugitive" and can come off with alcohol or other cleaners. But more likely polyamide, a...
I have my first pair on order - Comfort DRx with a Crizal AR - Hubby and I want them for fishing and kayaking - it would be nice to have something lighten up at the end of the day, and maybe have a...
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