New Balance Hierro v9 Shoe Size:5.5 Large arm openings — reduce

Large arm openings — reduce chafing and enhance freedom of movement

If you want to hit higher carb numbers

Suunto app integration — audio customisation + real-time performance feedback from Suunto watches

QuietGlide® technology

the Tech 4

New Balance Hierro v9 Shoe Size:5.5 Large arm openings — reduceThe New Balance Fresh Foam X Hierro v9 offers ultimate reliability for adventurous terrain, with technical features designed specifically for the trail runner. Dual density cushioning combines plush comfort with a more stable underfoot feel. A Vibram outsole features a revamped tread pattern and deeper, 6mm lugs, for superior traction, and a knit upper with a gusseted tongue is breathable, while helping to protect against loose debris. Key Features