The Xero HFS II is designed for asphalt running, but many HFS owners have also found them suitable for varied use. The shoes are lightweight and their soles are thinner than they might appear from the side - the thin sole material curves up "bathtub-style" along the edges of the shoe. There is no support, gait guidance, or significant shock absorption, as these are pure barefoot shoes. For Xero fans: this second version is lighter, more comfortable, and equipped with a more gripping outsole compared to the original. - Relatively wide last - Rounded and generally roomy toe box - Breathable upper material - Semi-coarse tread pattern that also works on gravel roads - TrueFeel outsole topped with a very thin layer of BareFoam foam that provides a tiny amount of shock absorption - Drop: 0 mm Those accustomed to regular shoes should start using barefoot shoes in small doses. The foot works in a very different way compared to when wearing shoes with shock absorption and often a higher heel