Put some bounce into your training session with the Nike Pegasus 41 men's running shoes. Combining ReactX and Zoom Air technologies, they have been designed to optimize responsiveness and energy return while keeping comfort at the forefront. ReactX foam has been developed to deliver a responsive stride in comfort, maximizing both impact absorption and energy return. Developed to reduce the environmental impact of sports equipment, it also requires less energy to manufacture than its predecessor. Zoom Air units have been added in the forefoot and heel for a more dynamic feel. Made from a lightweight engineered mesh, the Pegasus 41s offer superior breathability and a snug fit, thanks to their internal midfoot strap.