The New Balance Fresh Foam X Hierro Mid is the perfect sneaker for running on difficult terrain. It features a black Vibram sole for superior grip and durability, making it the ideal choice for running on muddy and slippery surfaces. This sneaker is part of the Fresh Foam X series, inspired by the challenging trails of the Hierro mountain range. With its sleek silhouette and superior performance, the Fresh Foam X Hierro Mid is the perfect choice for any outdoor enthusiast.