Engineered for speed and performance, the Brooks Mach 10 spike is ready to push the pace whether it's cross season or track. Highly breathable mesh upper with lightweight welded TPU side support panels, CMEVA midsole. Ultra thin carbon rubber outsole with aggressive lug configuration. Six-spike configuration, DRB™ Accel. Includes 6mm spikes and wrench... Wt. 7.5 oz