The plush feel of the Hierro just got a sustainability make over, with the New Balance 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 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 upperHead into the trails with protective waterproof technology, ultra-soft cushioning and superior grip in this version of the Fresh Foam X Hierro v8 GORE-TEX®.The GORE-TEX membrane protects your feet from wind, rain and water, without losing breathability. The Vibram outsole is resistant to friction and is characterized by increased resistance during wear in difficult conditions. The tread blocks ensure good grip on the ground, facilitate uphill and downhill running and prevent slipping.