McDonald's announced Tuesday that it would make Happy Meal Toys fully sustainable worldwide by 2025.

The transition will change plastic toys into crafts, puzzles, and games made from certified materials like bio-based and plant-derived materials and certified fiber.

“Our next generation of customers care deeply about protecting the planet and what we can do to help make our business more sustainable. We’re always exploring where we can drive greater impact, including the transformation of beloved icons like the Happy Meal,” Jenny McColloch, McDonald’s chief sustainability officer, said in a press release.

There has been a strong push for ecofriendlier products to tackle the overuse of plastic. Amy Murray, McDonald's vice president of global marketing, said at a briefing that children and parents have been asking for the transition away from plastics.

“With this transition for our toys, we’re working closely with suppliers, families, and play experts and engineers to introduce more sustainable, innovative designs and help drive demand for recycled materials, to keep McDonald’s communities and beyond smiling for generations to come,” McColloch said.

In 2019, a petition started by two British children asked McDonald's and Burger King to stop giving out plastic toys. The petition received over 500,000 signatures.

The fast-food chain says if the goal is achieved it will result in a 90% reduction in virgin fossil fuel-based plastic used in toys since 2018. McDonald's sells more than 1 billion Happy Meal toys a year.

“By reducing conventional virgin plastic inputs by a projected 90%, the reimagined toys will reduce the demand on fossil fuel plastic production to instead create new markets for responsibly sourced renewable and recycled content. And through its immense reach of these toys, McDonald's can engage its millions of daily customers around the world in the transition to a more sustainable, circular future," Sheila Bonini, senior vice president of private sector engagement at World Wildlife Fund, said in a press release.

Happy Meals were first released in 1979.