The updated *Hierro* is a great choice not only as a running training shoe but also for walking and fast hiking. The thick sole structure features two types of cushioning foam: a softer foam on the footbed side for comfort and a firmer foam on the outer sole for stability. The overall feel is stable. Your foot doesnt just rest on a flat cushioning layer but is cradled by the material, creating a "bathtub-style" fit around the foot. The *Hierro v9* shoes have a heel that is 4 mm higher than the forefoot, which appeals even to experienced runners. The upper fabric is more durable than average and clearly built to last. - Standard fit with a roomier toe box compared to previous versions - Vibram Megagrip outsole with 4.5 mm lug depth - Premium Fresh Foam X cushioning foam - Slight "rocker" design for a smooth, rolling stride - Sole thickness: 42 mm at the heel, 38 mm at the forefoot, with a 4 mm drop - Durable toe cap for added protection