Mizuno Men's Wave Alchemy 10 Running Shoe 100% Air mesh and synthetic Rubber sole Mizuno Wave - The leading footwear technology that combines cushioning and stability, two distinctly different elements that are both inherently necessary in great running shoes Dynamotion Fit - Design Technology that relieves the stress the foot naturally places on footwear, eliminating distortion for the perfect fit Mizuno Intercool - Full-length midsole ventilation system reduces heat and humidity build-up inside the shoe Gender Engineering - The latest engineering philosophy to maximize performance by tailoring footwear to the separate needs of men and women Flex lines for women and wider sole for men SmoothRide - Engineering approach to minimize the rapid acceleration and deceleration of the foot during transition, creating the smoothest ride possible