Soft comfort and support for underpronator to the moderator overpronator. * All-over reflective upper and glow-in-the-dark gel give you standout style. * FluidFit adapts to foot, creating customized, glove-like fit. FluidRide lightweight midsole creates soft, propelling, and long-lasting step. * Guidance Trusstic Syatem and Impact Guidance System enhance natural gait. * FIT: Length and Width - True to size. We suggest you order your normal shoe size.