(CNN)Lacoste temporarily replaced its polo shirts' crocodile logo with the images of 10 endangered species to help counter the threat of extinction.

The shirts, which are part of a limited run supporting the "Save Our Species" campaign that launched during Paris Fashion Week on March 1, have sold out.

Replacing the crocodile above the left breast of the shirt are the Gulf of California porpoise, the Burmese roofed turtle, Sumatran tiger, the Anegada ground iguana and the northern sportive lemur, among other.

The French clothing company calibrated the number of shirts produced for each series to the population of the remaining animals in the wild. Of the 1,775 shirts available, the Gulf of California porpoise had the smallest print run, with just 30 shirts available.

The Anegada iguana, by contrast, was the most available, with 450 editions. Proceeds went to International Union for Conservation of Nature, an international advocacy organization working to protect nature that sponsored the campaign...