Castelli Nano Flex armwarmers are great in dry conditions but also give some extra protection and warmth in wet conditions. Castelli invented the category of water-protective thermal fabrics, and Castelli's proprietary Nano Flex is often imitated but never equaled. No compromises for any conditions.

• Water-repellent thermal and breathable Nano Flex fabric.
• Flat-lock stitching with single seam.
• Double-sided silicone grippers to keep warmers in place.
• 8°-18°C / 46°-64°F.
• Weight: 66 g.