Propulse - The Ultimate Running Sunglasses

Wraparound geometry, lightness and deep lenses make Propulse the ultimate sunglasses for running.
Pro triathlete Victor del Corral illustrates the main features of Propulse

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nice looking frame and lens shape.

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A titanum Temples on their other model ( the one with Aliminum temples) would be more durable and unlike Aliminum there is zero chance for Alzheimer. But this propulse is a special polymer fram si therec isno problem. The nose piece screw is it screwed into metal insert or plastic ? metal screw into plastic screwing or metal into metal ? since metal screw to plastic screwing is going to get weared after a few nose piece replacements.