These great men's running shoes Joma SIERRA MEN 2201 are for training and racing in trail terrain. The upper is made of breathable and durable mesh material with the FLEXSHIELD system for better foot protection. They have a perfectly fitting design which is ensured by a 100% elastic tongue and nylon lining with elastane. The insole is made of preformed EVA foam adapted to the shape of the foot. The midsole is made by the Full Dual Pulsor system - it consists of a double phylon in various densities which optimises the cushioning. It contains a piece of phylon with a higher density which provides higher stability. The sole is made of resistant DURABILITY rubber which ensures grip in all situations.