The nike Ballista II is a great running shoe with mesh and synthetic uppers for a comfortable yet breathable feel. The high resolution Impact Groove configuration on the sole of this shoe is it's USP - it provides a naturally efficient stride and flexibility for the wearer. Upper Meshed upper for ample breathability Perforated synthetic overlays for structure, midfoot support and ventilation Lacing system for snug Fit and protection from chaffing Synthetic laces for durability Plush padded tongue for enhanced comfort Cushioned sockliner for in-step comfort and snug fit Reinforced overlays on heel cup and above toe guard for enhanced durability and protection Midsole Cushioned footbed for comfort and impact protection EVA midsole for durability and enhanced shock absorption Padded back sole to lock the foot in place Outsole High quality rubber outsole for enhanced durability Forefoot and backfoot outsole with rectangular lugs and grooves for maximum traction and grip Impact guidance system along the length of the foot for ample impact protection, energy return and propulsion Deep flex groove on mid forefoot for flexible movement Forefoot outsole reinforced onto the upper as a toe box for enhanced protection to the forefoot Wash care Do not machine wash Remove dust and dirt with dry clean cloth