Up your game by optimizing your biomechanics with ultra-firm support. Dash Short insoles ultra firm support for performance athletes, people with especially flat feet and those who overpower other insoles comes from the 1.25mm thick, 100% carbon fiber arch supports. These super-thin, ultra-lightweight, nearly rigid insoles help lengthen your stride and improve your alignment. NOTICE: The thin, firm nature of carbon fiber may damage the lining in some footwear.
