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A/C Cycling Cap

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The Castelli A/C Cycling Cap is designed for hot summer riding, when the temperature just keeps climbing but you still want to get out on two wheels. Featuring a well-ventilated mesh construction, the A/C provides moisture-wicking comfort to ensure you always have a cool head.


  • Highly ventilated open-cell mesh construction.
  • One size fits all design.
  • Claimed weight: 40 grams.
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Love the hat
by Stealth356
Competitive Racer
SF Bay Area

I use it underneath my helmet to control perspiration

Reviewed 10/11/2018
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Love this cap
by tobysuhm
Cycling Enthusiast
Seattle, WA

Great cap for keeping bugs out of your head during rides. Also provides a bit of warmth on chilly days, but mesh design prevents you from overheating on warm days. Castelli logo is more substantial, won't wash off after a couple of launderings like the previous design

Reviewed 10/4/2018
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