We set out to create our warmest bootie ever, which meant rethinking how booties are made. For the windproofing we went with GORE-TEX INFINIUM WINDSTOPPER fleece-backed fabric, which also lets more moisture escape than any other windproof fabric. Then we added a second fleece layer with Polartec Power Stretch Pro, which is unrivaled in overall loft. The two layers are thick enough that we had to do a wheel well single-layer construction by the ball of the foot to prevent the fabric from rubbing on the crank. We made the bootie high for extra warmth and gave reasonable splash protection.
- Castelli’s warmest shoecover for extreme conditions.
- GORE-TEX INFINIUM WINDSTOPPER fabric for windproof water protection with maximum breathability.
- Polartec Power Stretch Pro lining to keep you warm.
- Reflective details provide high visibility.
- YKK AquaGuard zipper.
- High-durability material under foot.
- Weight: 200 gr.
- Thermal range: min -10/max -5.
- Color: Black.
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