Mizuno Men's Wave Inspire 7 Running Shoe 100% Synthetic Rubber sole Dynamotion Fit design technology relieves the stress the foot naturally places on footwear, eliminating distortion for the perfect fit Mizuno Intercool is a full-length midsole ventilation system that reduces heat and humidity build-up inside the shoe Gender Engineering philosophy maximizes performance by tailoring footwear to the separate needs of men and women SmoothRide Engineering utilizes the maximum energy efficiency properties of both flexibile and stiff footwear