Castelli Estremo WS Cap
The Estremo WS Cap is Castelli's warmest, using GORE-TEX INFINIUM™ WINDSTOPPER® X-Fast on the front to block the wind and Warmer material on the back to allow moisture to escape. It sits comfortably under a helmet and provides full coverage of the ears for additional protection.
- GORE-TEX INFINIUM™ WINDSTOPPER® X-Fast on front blocks wind
- Warmer fabric on back for breathability
- Cut to fully cover ears for warmth
- One size fits most design
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