Sam’s Club Exclusive Pair of Allbirds Wool Runners. Men’s Size 11. Excellent pre-owned condition, like new. ALLBIRDS SAM'S LIMITED EDITION WOOL RUNNERS ATHLETIC SHOES LACE UP IN BLUEBERRY (BLUE/WHITE). FROM ALLBIRDS: "Our Wool Runner is carbon neutral thanks to sustainable practices, like using natural materials fundinghigh impact carbon projects. But before we balance the emissions, its footprint starts at 9.9 kg CO2e. Learn more about carbon footprint labeling and our commitments to reduce our impact." 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 EVA Shoe laces made from recycled plastic bottles Castor bean oil-based insole foam ZQ merino wool heel lining