Allbirds Wool Runner Fluffs Sneakers Thrive Teal/Deep 。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. Learn more about carbon footprint labeling and our commitments to reduce our impact. 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 Where It’s Made: Vietnam.