"This is the shoe that started it all: The Original Wool Runners. Our superfine ZQ Merino wool material is incredibly soft and cozy, naturally thermoregulating, and ready for anything. Our Wool Runner has a carbon footprint of 7.07 kg CO2e." Classic Wool Runner by Allbirds Women's size 9 Black (charcoal) Best For: Walking, cooler weather, everyday wear Super Soft Material: Warm and cozy premium ZQ Merino wool provides next-level comfort Versatile Design: Wear-with-everything classic style, great for travel Sustainable Materials: ZQ certified Merino wool upper that meets the highest standards of animal welfare, environmental care, and social sustainability SweetFoam® midsole made with sugarcane-based green EVA Shoe laces made from recycled plastic bottles Castor bean oil-based insole foam ZQ merino wool heel lining In great condition with no notable flaws or wear. Carefully ships next day from a clean studio. # minimal casual travel walking everyday