Will Smith and Leonardo DiCaprio are teaming up for a good cause.

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The actors are partnering for the launch of two new pairs of limited edition running shoes to raise money for DiCaprio’s Amazon Rainforest Fund.

The shoes come from the company Allbirds, in which DiCaprio is an investor, with a blue and white design to match Smith’s sustainable water brand JUST.

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Introducing: the @Allbirds and JUST Limited Edition Tree Runner and Tree Topper! Shoes and water may seem out of the blue, but to us it was second nature. Like us, Allbirds is committed to using natural materials to make better things in a better way. From the FSC-certified trees to make their shoes and our packaging, to the Brazilian sugarcane in their SweetFoam™ soles and our carton caps, it’s clear that we’re birds of a feather. ⁣ ⁣ With the environment + Brazil close to both of our hearts, 100% of the proceeds from this collection will be donated to Allbirds investor @leonardodicaprio’s Amazon Forest Fund. These dollars will work to fight the devastating fires burning in the Brazilian Amazon. #drinkJUST #weareallbirds

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“There is only one Mother Earth, and it’s on us to protect her. The Brazilian Amazon, our largest carbon sink, has now been burning for a month. We source Just sugarcane caps from Brazil, so this hits especially close to home. Collaborating with businesses who are creating innovative, sustainable solutions are the key to our future, and it’s important that we support those brands who give back more than they take,” Smith said in a statement.