Reach new speeds in this incredibly lightweight spike.．Lightweight, breathable mesh upper with synthetic overlays to lock your foot in place. ．Die-cut EVA midsole for responsive underfoot cushioning. ．Seven-spike Pebax plate. Includes 3/8" pyramid spikes and a wrench. ．XT-9000 carbon rubber in heel for traction and durability. ．Wt. 5.8 oz.