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Description of Business	9 Months Ended
Description of Business	Sep. 30, 2025
Accounting Policies [Abstract]
Description of Business	Description of Business Allbirds, Inc. (“Allbirds” and, together with its wholly owned subsidiaries, the “Company,” “we,” or “our”) was incorporated in the state of Delaware on May 6, 2015. Headquartered in San Francisco, California, Allbirds is a global lifestyle brand that innovates with naturally derived materials to make better footwear and apparel products in a better way, while treading lighter on our planet. The majority of our revenue is from direct sales, including sales to consumers via our digital and store channels, and from third-party sales, including distributor sales to our distributor partners and wholesale sales to our retail partners.