Choose Nano Flex for warmers that are great in dry conditions but also give some extra protection and warmth in wet conditions. We 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.

Rating:

• Windproofness 3/4
• Waterproofness 3/4
• Insulation 3/4
• Breathability 4/5
• Lightweight 4/5

Features:

• Water-repellent thermal and breathable Nano Flex fabric
• Flat-lock stitching with single seam
• Double-sided silicone grippers to keep warmers in place
• 12°-20°C / 54°-68°F
• Weight: 89g