This running shoe delivers an even more propulsive ride than previous versions with an energized foam midsole, gearing it for training and racing alike. It has been reworked with a performance knit that offers an incredible fit, and remains a formidable competitor with a responsive, carbon fiber plate and aggressive Meta-Rocker. 2" heel; 1" platform (size 8.5) Racing: puts streamlined comfort and performance under every stride to eliminate distraction and promote speed at any distance Neutral: provides soft, even cushioning with an emphasis on comfort during any activity Removable insole allows for custom orthotics Meta-Rocker technology ensures a consistently comfortable ride at any distance Textile upper and lining/rubber sole Imported