Dynamotion fit works with your foot throughout the gait cycle with a 1224mm heel to toe drop for a smooth ride with support the u4ic midsole delivers comfort durability and shock absorption features u4ic midsole delivers comfort durability and shock absorption mizunos intercool ventilation system combined with a breathable upper keep your feet cooler for longer carbon rubber x10 outsole for improved durability dynamotion fit works with your foot through the gait cycle 1224mm h