Designed to keep you going on your longer runs, this neutral running shoe gives you better-than-ever comfort and fit for distraction-free performance. Neutral: provides soft, even cushioning with an emphasis on comfort during any activity 3D Space Construction™ biometric engineering accommodates gender-specific compression on each heel strike Removable cushioned insole allows for custom orthotics GEL® cushioning in the sole absorbs impact and creates a smooth heel-to-toe transition FlyteFoam Propel cushioning delivers supreme bounceback on every stride, even on distance runs Trusstic System™ ensures structural integrity at the midfoot while reducing weight ASICS High Abrasion Rubber (AHAR) withstands wear in critical areas of the tread Synthetic upper and lining/rubber and synthetic sole Imported