NANO FLEX FABRIC: Castelli's proprietary Nano Flex fabric is the ultimate warmer; warm and comfortable in dry conditions, water repellent in damp conditions, and still performs well in extreme conditions.
WATER-REPELLENT: Water-repellent fabric to keep you protected from road spray.
COMFORT: Flat-lock stitching and stretch fabric provide a comfortable and irritation-free fit.
BREATHABLE: Nano Flex fabric is highly breathable while still providing ample warmth.
SILICONE GRIPPERS: Double-sided silicone grippers keep warmers in place and reduce ride up.
