Breathable mesh and side perforations add comfortable ventilation to this cushioned sneaker that has heightened energy return. Energy return: transforms every heel strike into responsive, explosive forward movement Neutral: provides soft, even cushioning with an emphasis on comfort during any activity Lace-up style Removable, cushioned insole with arch support Breathable mesh allows ventilation of excess heat for cooling comfort PWRRUN+ puts expanded cushioning with less weight underfoot to deli