Allbirds Tree Flyer Running Shoes Black Yellow Women 7.5 Sustainable Sneakers

NWOT-never worn- Allbirds Tree Flyer running shoes in a striking black and yellow colorway. These performance sneakers feature a breathable FSC-certified eucalyptus tree fiber upper and a bio-based SwiftFoam midsole for lightweight, high-rebound cushioning. Designed with a flared heel for stability and a geometric midsole profile, they offer a smooth ride for long runs or daily wear. The sustainable construction includes recycled polyester laces and a bio-based nylon eyelet strip. Reflective details on the heel pull tab enhance visibility during low-light activities.