Nature doesn't judge - and since the rainbow is a symbol of diversity, openness and equality, Fjällräven believes that it perfectly captures the spirit of outdoor life. Känken Rainbow celebrates each individual's freedom to express themselves and for every backpack sold, 1% of the proceeds go to projects within Fjällräven‘s Arctic Fox initiative. A Special Edition Pack.Vinylon FVinylon F requires no coating. By absorbing moisture better than any other synthetic fibre, Vinylon F swells like a natural fibre and fills the spaces in the fabric. The fabric is therefore waterproof due to its structure, which makes a coating superfluous. The result is a lighter and more durable material. In addition, Vinylon F has a high abrasion resistance, which ensures that it proves its durability and functionality year after year.