M New Balance Hierro v9 MHIER287 buff the PWR-X v3 represents the

the PWR-X v3 represents the pinnacle of weight-to-stiffness ratios

which why we created the Slats Crew

this super-light midsole is redefining the next generation of speed designed for dynamic

This is trail running in the new Timp 5 GTX

​We upgraded underfoot cushioning with super critical foam

M New Balance Hierro v9 MHIER287 buff the PWR-X v3 represents theThe 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.