Temperature range from -8°C to -14°C (18°F to 7°F). Recommended iron temp.: 150°C (311°F). The 5 series fulfill a hardness gap between the 4 and the 6 series. It was a demand from alpine and has been used with great success in World Cup over the last seasons. Cross country is also gradually discovering HF05X and we see more and more servicemen who prefer this wax in cold conditions. The lower melting point compared to the 4 series makes the 5 series easier to work with, without sacrificing the good glide properties it has in cold conditions. For fresh, old or man made snow. The speed of the iron should be approx. 8-10 sec. on a skating ski. The wax can be re-heated after cooling to room temperature (10 min) for better durability. Scraping after appr. one minute. Important to have a good iron to get an efficient melting of the wax. HF05X can be used as a race wax alone or as a base for Cera F powder, such as FC05X.