Nano Flex for the ultimate warmer: warm and comfortable in dry conditions, water repellent in damp conditions, and still warm in extreme conditions.

Product features

• Water-repellent thermal and breathable Nano Flex fabric
• Flat-lock stitching with single seam
• Double-sided silicone grippers to keep warmers in place

Technical Features

• Insulation: 3/5
• Waterproofness: 3/5
• Windproofness: 3/5
• Breathability: 4/5
• Lightness: 4/5

• Weight: 89gm
• Temperature: 8C – 20C / 46F – 68F
• Fit: Regular

NANO FLEX ALL-CONDITION WARMERS 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 equalled. No compromises for any conditions.