Greenpeace urges outdoor lovers to reject the chemicals used in popular weather-resistant fabrics.

The highly successful #Detox campaign that Greenpeace launched last year has moved beyond the fashion world into the great outdoors. During the months of May and June, the organization is sponsoring seven expeditions to famous remote regions of the world to measure the presence of per- and polyfluorinated chemicals (PFCs).

PFCs are commonly used by outdoor gear manufacturers to make products waterproof, stain-resistant, and nonstick. While wearing a raincoat, staying dry in a tent, or waxing a new snowboard, you expose yourself to PFCs while releasing them into your surroundings. They are highly convenient chemicals, but unfortunately they’re also lethal.

Greenpeace wants to raise awareness about how persistent these chemicals are, and how they have likely already contaminated even the most unlikely places. Once released, there’s no turning back.