The Solda F15 Medium Fluor ski wax contains a lower proportion of fluorine making it ideal as a performance training wax. With the same temperature ranges as the Solda F31 range, you're able to find a F15 option to suit all conditions. For the days you really want to fly, use F15 as a base wax for pure fluoro race additives.  Features: Snow temp: 0 to -1°C Air temp: 5 to -4°C Relative humidity: 30-60% Weight: 180g F15 Medium Fluor Ski Wax - Yellow 180g