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Summit+ exclusive
Estremo Thermal Winter Skully
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Wear the Estremo Thermal Winter Skully and let heat stay, vapor go
What Our Gearhead® Experts Are Saying:
"I wore this under my helmet on a freezing morning ride, and my head stayed warm without ever feeling sweaty or damp underneath. The full ear coverage made a real difference once the wind picked up. This is the skully I reach for anytime the temperature drops fast."
There's a balance every winter rider chases, staying warm without trapping so much heat that you're soaked by the second climb. The Castelli Estremo Thermal Winter Skully finds that balance. Polartec AirCore fabric manages wind across the front while letting vapor escape quickly, so warmth builds without turning into a sweaty mess underneath the helmet.
A warmer fabric on the back adds extra comfort where wind exposure matters less, and full ear coverage handles the part of cold weather riding that ends most people's motivation before they've even clipped in. It's a simple piece that solves a problem every winter rider knows well.
Details
- Thermal winter skully built for maximum warmth
- Polartec AirCore front manages wind on contact
- Vapor escapes quickly to avoid trapped moisture
- Warmer back fabric adds comfort under a helmet
- Full ear coverage blocks cold from every angle
- Low-profile fit layers easily beneath any helmet
- Item #CSTZ85C
- Material
- Polartec AirCore
- Adjustability
- fitted
- Activity
- bike
- Manufacturer Warranty
- limited 2 year
Related Categories
Frequently Asked Questions
How does Polartec AirCore perform on the Castelli Estremo Thermal Winter Skully during cold rides?
Polartec AirCore on the front manages wind while allowing vapor to escape quickly, and warmer fabric at the back adds insulation for winter cycling.What materials make up the Castelli Estremo Thermal Winter Skully?
The front and central insert are 100% polyester; the rear lower part and lateral inserts are 52% polyamide, 32% polyester, and 16% elastane.How does the Castelli Estremo Thermal Winter Skully fit beneath a cycling helmet?
Its fitted, low-profile construction is designed to sit smoothly under a helmet, while full ear coverage adds warmth without taking up much space. The listing specifies One Size.Does the Castelli Estremo Thermal Winter Skully cover the ears for winter riding?
Yes, it fully covers the ears, and the warmer rear fabric adds comfort in cold conditions. Its design is intended for cycling beneath a helmet.How should I wash the Castelli Estremo Thermal Winter Skully?
Machine wash it at 30°C and tumble-dry on a cool setting. Avoid bleach, ironing, and dry cleaning.