The new Swix Marathon Black is an excellent glide wax in warmer conditions with dirty or contaminated snow. Marathon Wax does fantastic on its own, but can also be used as a base wax before you apply any powders or other top coat waxes. Marathon Black is great in warmer temperatures, but also stays competitive in colder temps. The new Swix formula of Marathon Black is now Fluorocarbon free that will not have negative effects on the environment. Now Fluorocarbon Free-Better for the environment, without sacrificing any speed., Recommended Iron Temperature 311F/155C, Designed for wet, contaminated and dirty snow., Can be used alone or as base wax for powders or other top coats., Great for cold application with Swix Roto Fleece Brush, A hard, durable glide wax for long distance cross country racing, Snow Temperature: Warm, Actual Temperature Range: 0C to +20C, Wax Form: Block, Composition: Fluoro Free, Size: 40g, Model Year: 2022, Product ID: 620507, Model Number: DHBFF-4, GTIN: 7045952514505