The plush feel of the Hierro just got a sustainability make over, with the New Balance Womens Fresh Foam X Hierro v8 GORETEX in Black using a brandnew midsole foam formula, outsole and upper, all focusing on creating the same smooth ride, but with a more environmentally friendly construction. The New Balance Women39s Fresh Foam X Hierro v8 GORETEX uses a 100 recycled polyester upper, dyed with a print dye technique that uses less water and energy to gain results. It also features printed components which contain rubber waste to reduce land fill and reuse materials.The Fresh Foam X midsole foam has been tweaked and now uses the highest level of sustainable sugar cane feedstock, at 40, meaning it has a lower reliance on virgin petroleum.It also uses an update to the Vibram outsole, called Vibram EcoStep Recycle it contains natural rubber and recycled rubber for a lower carbon component and again, reducing the reliance on virgin petroleum.With the Hierro v8 you can take a run in the great outdoors and know that you have taken part in making it sure it stays great.The GTX version features a GoreTex waterproof liner across the upper for weatherproof comfort. Stack height 26 20mmOffset 6mmLug height 4mmOutsole Vibram EcoStep NaturalFresh Foam X midsole utilises 40 renewable sugarcane feedstock100 recycled polyester upperOver the production of the shoe, over 8 tons of rubber waste will be used in printed componentsGORETEX waterproof upper. Utilisation : Course et entraînement sur sentiers / Randonnée légère en montagne Drop : 6mm Semelle extérieure : Vibram® Eco-Step Natural avec crampons Micro-Traction Semelle intermédiaire : Technologie d'amorti Fresh Foam X Tige : Matériaux respirants et renforcés pour la protection Languette matelassée pour un maintien du pied optimal Système de laçage traditionnel Gore-Tex : Matériaux respirants avec membrane Gore-Tex Invisible Fit Poids : 318g