Allbirds Tree Runner Blue Sneaker. Lace up closure. Good pre-owned condition. Please see all detailed photos as they are part of the description (first photo is from their site). Men’s Sz US 9 / EU 41-42DETAILS• Cushioning: absorbs impact and distributes weight for consistent, buoyant comfort under each step• Tencel® lyocell and textile upper/merino wool and Tencel lyocell lining/SweetFoam EVA sole• Made with cool, sustainably minded mesh uppers and cushioned with a springy sole made with sugarcane-based foam• Imported