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 Hierro, a dedicated, off-road application of our best running technology. The Fresh Foam Hierro v6 GTX employs a Vibram® outsole, GORE-TEX® waterproof fabric in the upper, and toe protection to create a protective shell of durability and traction around the signature Fresh Foam cushioning.