Allbirds Women's SuperLight Tree Runner – Light Grey/Medium Grey (Blizzard Sole

Made with a breathable, multi-panel upper for durability and flexibility, our revolutionary SuperLight Foam technology offers a light-as-air fit and one of our lowest carbon footprints to date.

We started with a SweetFoam® sugarcane base and infused it with nitrogen (versus chemical foaming additives). The result? Our lightest and lowest carbon midsole ever. It’s featherlight, high-performing, and even better for the planet thanks to approximately 70% bio-based content. Read more about our materials. 

This shoe is washing machine approved. Just remove the insoles and hand wash them separately to keep every step as fresh as the first.