People love the idea of adventure in the great outdoors, but there’s more to the natural landscape than fresh air and scenic views. Uneven terrain, debris, and moisture are unique challenges to footwear that require specialized construction. For those who take going off the beaten path literally, there’s the Fresh Foam X Hierro, a dedicated, off-road application of NB's best running technology. The Fresh Foam X Hierro v7 GTX employs a Vibram Megagrip outsole and a GORE-TEX waterproof lining to create a protective shell of durability and traction around the signature Fresh Foam X cushioning. 319grams (11.3oz) 8 mm drop; due to variances created during the development and manufacturing processes, all references to 8 mm drop are approximate Fresh Foam X midsole delivers our most cushioned Fresh Foam experience for incredible comfort Synthetic and mesh material GORE-TEX waterproof fabric protects feet from wind, rain and water without sacrificing breathability Upper features a breathable yet protected construction Upper features no-sew overlays for a sleek fit and feel Vibram Megagrip outsole provides superior grip.