Temperature:Air -4°C to +4°C (25°F to 39°F)TS8B is made harder than the std TS8. The adjusted hardness makes the wax more durable and absorbs less dirt. The solid lubricant additive reduces the friction in contaminated snow. Excellent results in artificial snow as well as natural transformed older snow, especially noticeable when used alone. 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. It's important to have a good iron to get an efficient melting of the wax. TS8B can be used as race wax alone but is often used as a base for top coats. Recommended iron temp: 140°C (284°F)