The New Balance MD800 V5 combines the aggressive traction and lightweight cushioning you need to dominate mid-distance races. Lightweight upper with supportive TPU film for a second-skin fit and feel. Revlite midsole for lightweight cushioning with every step. Six-spike Pebax® outsole plate for aggressive grip on the track. Includes 3/16" pyramid spikes and a wrench. Wt. 4.5 oz.