This brand new model is Mizuno's most cushioned training shoe. MIZUNO COB Technology: Mizuno COB midsole has a textured upper surface that is linked with the outsole and directly transmits information from the ground to the bottom of the feet. By increasing sensitivity under foot, Mizuno COB technology enables improvement of an athlete's balance and ultimately their performance. Sharp MIZUNO COB Outsole: Provides more traction during speed and agility workouts, as well as general fitness training. EVA Midsole External Heel Counter: Provides excellent foothold and weight efficiency 2-Layered Upper Mesh Construction : Designed to provide added durability and an ideal fit.