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Summit+ exclusive
Estremo Thermal Winter Cap
Quantity
Only 5 In stock
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Bundle up, ride on, and count on the Estremo Thermal Winter Cap
What Our Gearhead® Experts Are Saying:
"I wore this under my helmet on a windy, cold morning ride, and my ears never went numb once, which almost never happens. The front panel really does block wind better than any cap I've used before. This is the first thing I grab when the forecast looks harsh."
Wind finds the gaps first, sneaking in around the ears and across the forehead until the ride stops being fun and starts being an endurance test. The Castelli Estremo Thermal Winter Cap closes those gaps before they become a problem. Polartec AirCore fabric across the front cuts wind on contact, while a full ear cover keeps the cold from creeping in from the sides.
A warmer, breathable fabric on the back balances things out, so heat doesn't build up under the helmet even as the front stays sealed against the elements. It's a small piece that makes a big difference on the days when everyone else is still deciding whether to ride at all.
Details
- Thermal winter cap built to block wind and cold
- Polartec AirCore front panel cuts wind on contact
- Warmer back fabric adds breathability under a helmet
- Extended cut fully covers ears for added warmth
- Compact fit layers easily beneath any helmet
- Item #CSTZ85B
- Material
- Polartec AirCore
- Adjustability
- fitted
- Brim
- short
- Activity
- road cycling
- Manufacturer Warranty
- limited 2 year
Related Categories
Frequently Asked Questions
How does the Castelli Estremo Thermal Winter Cap protect your ears on cold road rides?
Its extended cut fully covers the ears, while Polartec AirCore on the front helps reduce wind penetration on exposed rides.Does the Castelli Estremo Thermal Winter Cap fit beneath a road cycling helmet?
Yes, its fitted, compact profile is designed to layer beneath a cycling helmet, and the short brim keeps the fit low-profile. The catalog lists it in One Size.What is the Castelli Estremo Thermal Winter Cap made from?
The cap’s listed composition is 100% polyester. Polartec AirCore is used on the front, while warmer, more breathable fabric on the back helps limit heat buildup beneath a helmet.Is the Castelli Estremo Thermal Winter Cap suited to wet winter rides?
It is intended for cold, windy, dry winter rides; its Polartec AirCore front helps reduce wind penetration, but no waterproof rating is listed.Can you use the Castelli Estremo Thermal Winter Cap for activities beyond road cycling?
It is designed for road cycling, with a fitted profile and short brim intended to sit beneath a cycling helmet. For other helmet-based activities, its One Size fit may work if it sits comfortably beneath your helmet.