Skip to main content Skip to search Skip to main navigation
Go to homepage

The Castelli under-helmet cap for men is a thin, close-fitting head covering for wearing under your helmet.

Castelli under-helmet caps for men

It catches sweat, prevents chafing from the helmet pads and keeps you a little warm on cool days.

For riders with very short hair or a bald head, there is a side effect: the scalp between the helmet vents no longer gets any sun — a spot where sunburn is regularly underestimated.

Tip: When buying, look for flat seams. Thick seams press under the helmet pads.