Summer Skullcap

What Our Gearhead® Experts Are Saying:

"This skullcap is part of my summer kit. The mesh keeps my head from overheating, and it fits super clean under my helmet without shifting around. It’s the kind of piece that makes every ride feel better once the heat cranks up."

The Castelli Summer Skullcap is engineered to keep you cool, dry, and distraction-free on hot-weather rides. Designed with helmet compatibility in mind, this streamlined layer combines a sweat-wicking front panel to manage moisture and a breathable mesh top for airflow across your scalp.

Its close-fitting design ensures there’s no bulk or pressure under your helmet, while flat seams maintain comfort even on long efforts. Whether you're climbing exposed roads, racing under summer sun, or logging big mileage in the heat, the Summer Skullcap adds lightweight performance where it counts—so you can focus fully on the ride.