The Fission SV MItten is built with insulated with 200g Primaloft Silver

so young racers can focus on their line

3D mapping results in near custom fit and freedom of movement

Focused for lower output activities in cool temperatures

Powerfuse Spyne

Castelli Nano Flex 3G Arm Warmer Size:M The Fission SV MItten isChoose 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. Water repellent thermal and breathable Nano Flex fabric Flat lock stitching with single seam Double sided silicone grippers to keep warmers in place