Allbirds Men's Tree Runner Go - Natural Black Shoe size:12 Outsole: TPR

Outsole: TPR

Lining / Insole (LEATHER WORKING GROUP certified) Upper Material high-gloss calfskin with patent leather surface

ensuring cushioning and rebound for an outsole featuring a rough finish

The Koru Collection features a 1" polyurethane sole which is extremely lightweight

Made by Högl using sustainable production methods

Allbirds Men's Tree Runner Go - Natural Black Shoe size:12 Outsole: TPRDesign offers enhanced durability in the toe and features a sleek, elevated look Reimagined midsole with more soft underfoot cushioning Lightweight, breathable tree fiber in the upper material delivers a cool, comfortable ride Made to Go with the flow, our fan fave sneaker keeps its signature breathable comfort while hitting the refresh button with a new elevated aesthetic and more springy support. Best For: Warm weather, everyday wear, socks optional