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Summer Skullcap keeps sweat at bay with breathable mesh under-helmet comfort
What Our Gearhead® Experts Are Saying:
"I use the Summer Skullcap anytime temps rise. It’s thin enough to disappear under my helmet but does a great job soaking up sweat and letting air flow through. It’s a simple piece, but it makes a big difference on hot, sunny days."
Warm-weather rides are better when we can keep distractions to a minimum, and the Castelli Summer Skullcap does exactly that. Designed as a low-profile layer beneath our helmet, it keeps sweat out of our eyes and lets cooling airflow in—so we can stay focused on the road ahead.
With a soft wicking fabric that lines the front and a mesh top panel for maximum ventilation, the Summer Skullcap is the piece we forget we’re wearing—until we realize we’re not wiping our face every few minutes. It fits snugly and comfortably, adding function without bulk for long summer miles.
Details
- Lightweight skullcap designed for warm-weather cycling
- Wicking front panel helps keep sweat out of eyes
- Mesh top panel increases airflow for ventilation
- Fits easily and comfortably under a helmet
- Minimal bulk and smooth seams for pressure-free comfort
- Essential for hot rides, climbs, and sunny training days
- Item #CSTZ839
- Material
- 100% polyester
- Manufacturer Warranty
- limited 2 years
- Activity
- road cycling

Disruptive Innovation Since 1876
Castelli traces its roots back to a fine tailor in the heart of Milan, founded in 1876. Today, Castelli's relentless pursuit of excellence creates disruptive innovation in the cycling community.