Castelli Nano Flex 3G Kneewarmers 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 equalled.
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.
Perfect for any condition, Castelli recommendation 12°-20°C.