The Allbirds Men's Tree Flyer 2 is a sustainable running shoe designed to enhance your running experience. It features a breathable upper made from FSC-certified TENCEL Lyocell, providing flexibility and comfort. The SwiftFoam midsole offers responsive cushioning, propelling you forward with each stride. An external heel counter, crafted entirely from recycled materials, ensures stability and reduces waste. The natural rubber outsole with a horizontal lug pattern delivers increased traction on various surfaces. This eco-friendly shoe, Allbirds Men's Tree Flyer 2, combines performance and sustainability, making it ideal for both daily runs and intense training sessions.