A specialty wax formulated for all kinds of old snow, from wet slush to icy crust. Suitable for a wide temperature range, as the snow type is more important than temperature. With LF series you get most of the innovations introduced with HF-series, at an economical level.
The wax is relatievly hard, so it's easiest to apply when you first rub the block onto hot iron, and then rub it to ski base. Scrape when still warm, let cool down and brush.