The adidas adiZero MD 2 track spike is the 400-1,500 meters. Air mesh upper provides maximum ventilation. Lightweight microfiber synthetic offers soft, glove-like fit. Molded EVA midsole adds lightweight performance. Pebax Ūplate delivers lightweight performance and durability. Replaceable spikes. Includes 1/4" compression spikes and a wrench. Wt. 5.7 oz.