A couple of years ago, Greenpeace took issue with the outdoor industry about their use of fluorocarbons in waterproof apparel. For years, outerwear brands have relied on a Durable Water Repellent (DWR) of a certain chemistry to bead up, then disperse, surface moisture from rainwear. The DWR used as a standard for years was a long-chain (C8) fluorocarbon-based treatment that is highly effective and extraordinarily durable.