The new Cera Nova CH7X's temperature range from -2degC to -8degC (28degF to 18degF). Recommended iron temp: 140degC (284degF). A new and improved wax that performs great in normal winter conditions below the freezing point. Its hardness makes it convenient to work with and easy to get a good end-result. It is an economic training and racing wax as well as an all round base prep wax. The speed of the iron should be approx. 8-10 sec. on a skating or alpine ski. The wax can be re-heated after cooling to room temperature (10 min) for better durability. Important to have a good iron to get an efficient melting of the wax.