The New Balance Fresh Foam X Hierro v8 GORETEX in Black features a brand new midsole foam formula, outsole, and upper designed for a smooth, environmentally conscious ride. Its upper is made from 100% recycled polyester, dyed using a water and energy-saving technique, and includes printed components with rubber waste to reduce landfill. The Fresh Foam X midsole now utilizes 40% sustainable sugarcane feedstock, reducing reliance on virgin petroleum. The updated Vibram EcoStep Recycle outsole combines natural and recycled rubber for a lower carbon footprint. With the Hierro v8, you can enjoy outdoor runs while contributing to environmental preservation. The GTX version includes a GORE-TEX waterproof liner for all-weather comfort. Stack height: 26mm (forefoot) / 20mm (heel). Offset: 6mm. Lug height: 4mm. Outsole: Vibram EcoStep Natural. Fresh Foam X midsole utilises 40% renewable sugarcane feedstock. 100% recycled polyester upper. Over 8 tons of rubber waste will be used in printed components during production. GORE-TEX waterproof upper.