Details: Built for 3,000-10,000m, the New Balance LD5000 V4 has the lightweight speed and aggressive traction you need to conquer the competition. FantomFit synthetic and mesh upper for a breathable, lightweight fit. New tongue construction securely wraps around the midfoot. REVlite midsole for light, responsive cushioning with every step. Full-length, four-spike Pebax outsole plate for aggressive traction and speed. Includes 1/4" pyramid spikes and a wrench. Wt. 4.6 oz.