-10ºC to -32ºC (14ºF to -25ºF). CH4 is slightly harder than HF4 and LF4. Can be used alone or mixed with other LF or HF waxes to increase durability on aggressive snow. In dry conditions can it be used up to -5ºC. (Is often used alone in World Cup Racing.) Should be scraped while still warm. Recommended iron temperature setting of 150ºC.