The 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. Features Fresh Foam X midsole foam delivers our most cushioned Fresh Foam experience for incredible comfort Vibram® Megagrip lugged outsole. Vibram® is a registered trademark of VIBRAM S.p.A All rights reserved. Toe Protect technology helps protect feet from rocks, roots and debris Gusseted tongue offers a secure fit and helps keep debris out 293 grams (10.3 oz) Size and Fit Lace closure 4 mm drop; due to variances created during the development and manufacturing processes, all references to 4 mm drop are approximate Men's standard D width