The Nike Flex Trail Shield Men's Running Shoes are designed to withstand rugged terrain. Plus, shield technology adds a water-resistant layer for protection against wet weather conditions. The lightweight trail-ready shoes are equipped with a reinforced toe and heel for increased durability. The midsole features a dual Phylon material for firm support for every stride. A gilly lacing system and gusseted tongue give you a personalized fit every time you lace up. The flexible outsole and unique grooves provide added grip and a free motion feel from start to finish.