Its features include the MIZUNO ENERZY CORE for cushioning and energy return, MIZUNO WAVE technology for great stability, and the woven material provides a soft and smooth fit. This is the ultimate comfortable shoe for runners of all body types to sail through their runs. The material offers a soft and smooth fit by slowly stretching horizontally without stretching vertically. By reducing the thickness of the fabric and adopting a new design that weaves air vents into the vamp, breathability is improved for an even more comfortable fit.