As a symbol of Mizuno’s constant pursuit for the most comfortable run, the Wave Sky 5 has been created to bring you on a run like never experienced before. Updated with the bounciest and softest material MIZUNO ENERZY core, to deliver the highest level of energy return and cushioning for a bouncy, floating feeling from heel to the toe. The improved MIZUNO WAVE construction combines large and small waves in a design that enhances the smooth cushioning feeling without sacrificing stability. The upper is also updated with a smooth stretch woven upper material to provide an extremely comfortable fit and breathability.