Winter Kit Special: 20% Off A Top & Bottom | Shop Now
This carousel displays a list of buttons that updates the main product image when a button is clicked
  • Options
  • Detail Images

CastelliA/C Cycling Cap


Item # CST00KX

Select options
  • Cancel
  • Select options
  • White, One Size ($21.95)
  • 100% Guaranteed Returns
  • Free Shipping on orders over $50

Item # CST00KX

A/C Cycling Cap

When the mercury skyrockets in summer, toss the Castelli A/C Cycling Cap underneath your helmet for ventilated, sweat-wicking comfort. This cycling cap features open-cell mesh construction for an airy feel that's sure to keep your head cool, regardless if you're rocking it under your helmet or wearing it by itself at the café afterwards.
  • Cool-wearing cap for sweltering summer rides
  • Mesh construction for airy-cool comfort
  • One size fits most

Tech Specs
Materialventilated mesh
Adjustabilityone size fits most
Recommended Useroad cycling
Manufacturer Warranty1 year

Claimed Weight

Claimed weights are provided by the vendor.

Have questions? Chat with a Gearhead

40 g

Actual weights are measured in-house by the Competitive Cyclist team.

Have questions? Chat with a Gearhead

What do you think about this product?


>Rating: 5

awesome cap

I've used it several times
True to size

I have a large, bald head, and I always wear coverings under my helmet to avoid sunburn, to avoid creases and indentations, and to wick sweat away from my helmet, thereby extending the lifespan of the lining. Plus it's great to wear when I stop for coffee. Most of these hats are either cotton (which makes no sense if you sweat), or they're too small. The A/C cap is perfect - it's stretchy and fits, it looks great, it wicks sweat off my head and out of my eyes, and although it isn't as cool looking as the retro cap. - which is cotton for some reason - the scorpion logo is actually a nice plastic applique which gives it an expensive look - and the flip side of the bill, which you don't see in the pictures, sports a cool sewn-on patch that says "rosso corsa". Love it.

So happy you commented about the underside of the brim! Couldn’t find info on that anywhere—thank you!

>Rating: 5

Fits the Bill

I've used it several times

Well made and comfortable. Fine mesh makes it perfect for avoiding forehead burn without having sunscreen cascading into your eyes on hot days.

>Rating: 5

Love it

Love it looks great and super light.

>Rating: 5

Looks good, good fit under helmet

I've used it once or twice and have initial impressions
True to size

This is a bit thicker across the top of the head than some other caps, but it isnt uncomfortable at all. I wear a L or XL helmet and this sits nice and close to the ears so t doesn’t interfere with the helmet adjustment band. Good construction.