The New Balance Fresh Foam X Hierro v9 is built for those who seek adventure. With more cushioning than ever, this trail running shoe is designed to keep you comfortable as you push your limits. The double-layered Fresh Foam X midsole and durable Vibram outsole work together to help you tackle any trail with confidence. Think of the Hierro v9 as combining the best features of v8 with those of the More Trail, a perennial trail favorite. This means increased stack height for softer landings and a more level heel-toe drop for smoother transitions. Made with dual-density Fresh Foam X, the midsole absorbs shock while staying responsive. New for this version, the firmer bottom layer of foam enhances stable footing, while the softer top layer yields New Balance's signature plush comfort. The upper is softer, with a redesigned gusseted tongue for a snug fit that keeps out dirt and debris. The Vibram Megagrip outsole uses bigger lugs with micro-traction details to give you sticky grip on rocky, slippery, and uneven trails. Whether you’re out for a quick run or a long adventure, the New Balance Hierro v9 has the cushioning and support to keep you going. MIDSOLE Dual-density Fresh Foam X provides a highly cushioned top layer for soft landings, with a firmer bottom layer for a steady and runnable experience. OUTSOLE Vibram Megagrip rubber is made to deliver industry-leading grip across variable surfaces, including wet rock. 4.5 mm Traction Lugs are broader, deeper, and laid out in a revamped pattern for best-in-class traction on a variety of terrain. The micro traction details increase the surface area to enhance overall grip. UPPER Engineered mesh features a softer gusseted tongue as well as abrasion-resistant overlays for added protection. Toe Protect is a tough protective layer that provides additional durability and protection for your toes from rocks, roots, and debris.