The model has a rounded tip and smooth material, the instep and sides have mesh and laces with irregular eyelets, and the sole has an air bubble located in the center. Ideal for running The air bubble in the center of the sole cushions the impact on your steps, making them ideal for running. The breathability you need The mesh located on the instep and sides will offer your foot the breathability you need to feel fresh even at the height of your sports practice.