Nano Flex 3G fabric delivers high breathability and warmth for riding in single-digit temperatures, making the Castelli Nano Thermal Cap ideal for all but the coldest winter days. The material is stretchy to suit a range of head sizes, and the cap has a drop-down earflap for extra coverage.
Features
Cap in traditional shape
Nano Flex 3G fabric for stretchy warmth and water repellency
Drop-down earflap
One size fits most design
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