High-fluoro glide wax. -8°C to -14°C (18°F to 7°F). Recommended iron temp: 150°C (311°F). The 5 series is brand new for the Cera Nova X line, and fulfill a hardness gap between the 4 and the 6 series. The lower melting point compared to the 4 series makes it easier to work with, without sacrificing the good glide properties in cold conditions. BW solid lubricant additive that reduces friction when very cold snow and dry friction conditions.