Inov-8 Men&#39;s roclite 312 GTX Trail Running Shoe,Navy/Yellow,11.5 M,Inov-8" /> 100% Mesh and synthetic Synthetic sole Fascia band aids propulsion efficiency of the running cycle and gives a spring off the toe Met Cradle upper support cradles fore foot behind metatarsal heads to provide a secure foot hold 4-arrow midsole cushioning for highest level of comfort TPU upper support: lacing attached to polymer upper supports, cradles the foot more evenly Aggressive lugs offer good grip while treadpattern allows for comfort on mixed terrain