Back in a lighter construction than the v6, the Fresh Foam X Hierro v7 GTX Trail Running Shoe lets us tackle trail runs with New Balance's best running technology. The Vibram Megagrip traction shines on most surfaces, letting us run wild when it's wet or dry, muddy or rocky. The Fresh Foam X midsole features lightweight, ultra-cushioning to absorb shock while the GORE TEX membrane fends off water while breathing sweat vapor into the atmosphere to keep us comfortable on soggy trails.