Lacoste has announced a new limited edition collection, and the whole thing is for a very good cause. The brand will swap its iconic crocodile logo for images of 10 endangered species, including the vaquita (a.k.a Gulf of California porpoise), the Burmese roofed turtle, the Northern sportive lemur, the Sumatran tiger, and the kakapo, among others. The final twist is that Lacoste will only make as many polos as there are animals of a specific species left in the wild. So, that means that for the species listed above, there will 30 vaquita polos, 40 Burmese roofed turtles, 50 northern sportive lemurs, 250 Sumatran tigers, and 157 kakapo polos.

Lacoste replaces its Iconic Crocodile logo with Endangered species for a special Capsule and is only making the number of POLOs in correspondence to how many of the particular animal is left in the Wild🖤 pic.twitter.com/x4k1osKbbF — Outlander (@StreetFashion01) March 1, 2018

The money from the polo goes to help Lacoste and the International Union for Conservation of Nature’s (IUCN) fight for wildlife conservation worldwide.

The total number of limited edition polos is a dismaying 1,775, and they are currently available online. The Save Our Species collection launched at Paris Fashion Week 2018 and you can participate in the cause even if you don’t want to (or, let’s keep it real, can’t afford) to buy a shirt. IUCN also suggests you help spread the word by using the #LacosteSaveOurSpecies hashtag on social media, or get involved with the Save Our Species campaign.

“Today, the Lacoste logo still symbolizes the will and commitment the brand invests into each action it undertakes,” IUCN said in a news release. “Taking the capsule collection from concept to launch has been achieved in half the time it usually requires for such a project and testifies to the dynamism which businesses like Lacoste can bring to the global extinction threat: a universal challenge which many agree is of utmost urgency to environmental sustainability.”