Inov-8 Road-X 155 - Men'sWith it's unique injection-molded Fusion Sole and a 1 Arrow Shoc-Zone, the Inov-8 Road-X 155 gives incredible proprioceptive feedback, minimum cushioning and a relaxed, natural foot position. This running shoe has been designed for elite runners and those with a refined natural running style. With a narrower fit ,this shoe is suitable for both men and women. Because the 155's are an ultimate lightweight performance shoe, anticipated durability is limited to 300 miles. Nylon 3D air mesh upper with TPU support webbing and protective printing. Injected EVA midsole. Wt. 6.8 oz.