This model seamlessly blends responsive NITRO™ foam cushioning with enhanced support from the innovative RUNGUIDE SYSTEM. Dual Density NITRO construction features a soft core for plush cushioning, complemented by a firmer rim that provides crucial support to your stride whenever it's needed. The TPU Heel Clip adds stability at foot strike, while the wide geometry ensures an exceptionally stable base of support. With a highly cushioned collar and breathable engineered mesh, enjoy unparalleled comfort with every stride. Run forever in FOREVERRUN.