THe Aku Selvatica Mid GTX Boot super lightweight, breathable and has dynamic support in the shoe upper and sole. The sole tread has been developed with exclusive AKU Elica Natural Stride System technology to optimize its biodynamic. The treads are Vibram® Selvatica Megagrip with an optimized surface in contact with the ground for better all-around traction. OrthoLite® anti-microbe and breathable insoles, with optimum shock absorption.