The Castelli Nano Flex 3G Knee Warmers are designed to provide exceptional warmth, breathability, and water resistance for variable riding conditions. 

Key Features:
  • Nano Flex fabric provides thermal insulation with outstanding water repellency.
  • Breathable construction helps regulate temperature during changing conditions.
  • Designed to perform equally well in dry weather and light rain.
  • Flat-lock stitching with a single seam minimizes chafing and enhances comfort.
  • Double-sided silicone grippers keep the warmers securely in place throughout the ride.
  • Stretch fabric offers a close, ergonomic fit with unrestricted pedaling movement.

Who is it for?
Road, gravel, and endurance cyclists looking for thermal knee warmers that provide warmth, breathability, and reliable water protection for cool and changing weather conditions.
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