New Balance Men's Fresh Foam Hierro V5 Trail Running Shoe100% Synthetic Imported Rubber sole 290 mm drop: due to variances created during the development and manufacturing processes, all references to 8 mm drop are approximate Fresh Foam innovative midsole created from a single piece of foam that provides a plush, more natural ride Synthetic upper Vibram outsole provides maximum surface contact and multi directional traction. Vibram is a registered trademark of Vibram S. p. A. All rights reserved.