This updated CH10 wax is slightly harder than its successor. Test results show that a slightly harder wax performs better in this area, which is especially noticeable when used alone. The adjusted hardness also makes the wax more durable. It’s a good wax for base prep wax, but also a great training wax. The ideal temperature range for this wax is 0 to 10°C. The speed of the iron at 120°C 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. It is important to have a good iron to get efficient melting of the wax. This wax is available in 60g and 180g quantities. In general, CH waxes are less durable and hydrophobic than their LF counterparts due to the absence of fluoride ions. This means that a CH wax will generally be slower than an LH wax and is more likely to be used as a recreational or training wax (instead of a racing wax). For more information check swixschool.com.