High quality upper material The perfect combination of MESH (sheer knit) & TPU Heat provides firmness. Ventilates and extends lifespan for a long time. Maintains the angle of the ankle at a natural angle. Protects your ankle from injury when moving quickly, with a Fabric Pull-Up for easy donning. Full new foam. Absorbs shock and converts it into return energy. To help soar forward faster. High quality midfoot anti-twist TPU Plate prevents the wrong angle of the foot when receiving impact.