Breathable mesh upper with synthetic no-sew overlays for a snug, sock-like fit. Burrito tongue construction stays in place as you run. REVlite midsole for lightweight cushioning. Blown rubber on the forefoot adds responsive cushioning with every step. Lightweight DYNARIDE outsole with TPU five-spike plate. Comes with 1/4" spikes and a wrench. Wt. 4.8 oz.