New Balance trail Hierro V2 AW17 shoes black and green After a 6-month hiatus, the New Balance trail Hierro V2 shoes are back in 2017 with a makeover that offers improved features, protection and traction. The incorporation of the Vibram Mega-Grip sole offers spectacular grip. Drop. 4mm Weight: 340gr New Balance trail Hierro V2 AW17 shoes black and green A completely revamped design offers improved features and increased cushioning, protection and traction. One of the biggest changes in the second version will be the use of a resistant Vibram Mega-Grip sole. . The new design provides much better traction on loose terrain, while remaining rollable on rough trails. Vibram's compound is ultra durable and offers a stickier feel suitable for a variety of terrains. The perfectly matched flank hex geometry has been marked for greater compliance. Drop. 4mm Weight: 340gr