Swix HF Black Wolf 7 Violet Wax is a high performance race wax for high humidity and very coarse snow. The new patent pending additive has a lower coefficient of friction that previous additives. Very durable yet still easy to iron and scrape. For very coarse-grained snow and new snow, or newly made man-made snow over a warm, moist snowpack. The BD solid lubricant resists penetration of sharp snow crystals. Also very resistant to dirt in the snow.