The streamlined Mach oozes aggressive performance and features a Max Flex RILSAN frame, Megol temple tips and an adjustable metal core Megol nose pad for non-slip performance and great comfort. Fits all face shapes.
SD-C7 Polycarbonate Lenses
Polycarbonate is an industry term for thermoplastic polymers that are both lightweight and impressively impact resistant. Thermoset polycarbonates provide an excellent plain vision lens material to protect your vision. While there are other products and poly-derivatives on the market that cost more, it is difficult to quantify the genuine difference in performance value, so with your money in mind, we have chosen polycarbonate. The chemical nomenclature is “C7”, so when you see SD (Sun Dog) C7 (chemical abbreviation) you will know you are getting a great pair of polycarbonate-based lenses.
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And you've just wasted five minutes reading this and wondering how to make the simple act of email reading last a full work day.