It was on a polycarbonate shell. Compared to both a rounder and aero shape with no cover so the study was after aero shapes became popular. It only rains here a few days a year so I have no need.....personally I'd just wear a cap or maybe a helmet with a long enough visor if I had glasses.



.....personally I'd just wear a cap or maybe a helmet with a long enough visor if I had glasses.
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