Thermal Cap Difesa 2 | Castelli | Ineos Grenadier | Pro Team Cycling KitIneos Grenadier Pro Team Castelli Difesa 2 winter thermal cycling cap The Difesa cap is a GORE TEX INFINIUM WINDSTOPPER piece that's best for extreme conditions. With the Difesa Thermal Castelli took away the windproofing, but by doing so dramatically improved the moisture management, so it's best for cool to cold conditions, especially with high intensity riding. There is a rib knit wool wrap around the ears to keep you warm but keep it all