Vivobarefoot Men's Breatho Trail M Trail Running Shoe,Black/White,43 EU/10 M US Polyester, Polyuretahne, Lycra Imported Rubber sole 0mm heel-to-toe differential Multidirectional lugs Puncture-resistant midsole layer Anatomical toe box Built for muddy, wet trails, this trail runner from Vivobarefoot offers ample breathability and aggressive tread.