Allbirds Women's Thrive Yellow Blizzard Tree Flyer Athletic Running Shoe-Size 11

Women's Blizzard Sole Tree Flyer Performance Athletic Running Shoe, Thrive Yellow, Size 11 New bio-based SwiftFoam midsole is light, bouncy, and ready for distance running Breathable upper helps keep the air flowing for extra comfortable miles Heel counter and flared, geometric midsole help keep your stride steady SwiftFoam Saves The Day. New high-performance midsole is big on cushion and energy return, making long runs easier on your body. Stability For Miles. External heel counter and flared, geometric midsole help keep your stride steady. Feel The Breeze. Lightweight, breathable eucalyptus fiber upper provides next-level comfort. FSC-certified TENCEL Lyocell (eucalyptus tree fiber) upper SwiftFoam midsole made with bio-based Pebax FSC-certified natural rubber outsole Shoe laces made from recycled plastic bottles SweetFoam insole foam ZQ merino wool heel lining