Mizuno Wave Inspire 11 Women's Running Shoes - SS15 U4iC Midsole - Cushioning compound which maintains lightweight, effective cushioning through the gait cycle, in a format that is 30% lighter than the previous AP+ midsole technology. Wave Midsole - Provides an amazing cushioning to weight ratio. Dynamotion Fit - Provides a fit that moves the way you do, actively working with the foot throughout the gait cycle. InterCool - A full length ventilation system that reduces heat and humidity. SmoothRide - Analysis of forefoot transition shows that for the smoothest, most efficient ride runners require shoes that flex easily at first and then become less flexible for an energy efficient toe off.