Allbirds Mens Wool Piper Black Sneakers Size 13. These are so lightly used, they're like new. Made with premium ZQ Merino wool. Cushioned midsole for all-day comfort. Sustainable Materials: ZQ certified Merino wool upper that meets high 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 These retail for $120. Get them here for less!