Castelli performance cycling capsome people may be initially sceptical of a simple cycling cap being labelled performance castellis performance cycling cap lives up to the hype though going beyond the typical flip up bill mounted to a wool or twill body instead it has a flip up bill mounted to a microfibre front panel that wicks moisture and promotes breathability the rear panels are mesh which capitalises on these benefits by aiding airflow making this a cap you can wear in the summe