Allbirds is a New Zealand-American company that designs and sells footwear. Allbirds' first shoe was the Wool Runner, which is made from New Zealand superfine merino wool. The company claims to keep the brand as eco-friendly as possible and is a certified B Corporation. In March 2018, the company started offering its footwear with eucalyptus tree fiber. In 2020 they launched their first apparel line for men and women made of sustainable materials.