Greenpeace activists and volunteers protest at the outdoor Mammut store in Hamburg and place signs showing a modified brand logo on the shop’s windows. The action follows Greenpeace’s publication of the report “Leaving Traces”, exposing the use of hazardous PFCs by major global outdoor brands, including Mammut.

PFC pollution is irreversible; these chemicals have been found in some of the most pristine areas of the globe, as well as having been detected in human blood.

Similar actions are carried out in more than 30 other German cities.