Side zip fastening

Making a big play or just kicking back

from heel to cuff - expect them to barely show above a running sneaker

so you can set your best pace

it can help with moisture management and odor control

Hierro v9 Medium Fall18 Side zip fasteningThe 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. Fresh Foam X midsole foam