New to Vauhti`s Pure Race Line-up to replace the old FC Blocks! Designed for old snow conditions, these new blocks are cold-applied to the base using felts and corks. High-quality hydrocarbon ingredients, zinc stearate and silicon wax gives excellence performance and good durability to the products in all weather conditions. Especially for old and artificial snow. RACE WARM OLD SNOW Block is for saturated snow above -3C. Apply one layer, felt into the base, then apply a second layer and follow with felt, cork (optional), and nylon to finish.