Castelli Estremo Windstopper Cap

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Castelli's warmest winter cap has GORE-TEX infinium windstopper protection on the front-facing surfaces, while we let sweat escape out the back with Warmer fabric. It's thick enoug h to provide warmth but takes minimal space under the helmet. GORE-TEX infinium windstopper X-Fast on front blocks wind Warmer fabric on back for breathability Cut to fully cover ears for warmth Weight: 48 g Fit: Comfortable Show more