Oblique Fine Twisted Hi-yarn UpperIt features a fine twisted Hi-yarn upper with oblique weaving to create breathable pores, making it more breathable, resilient and durable. Built-in support reinforcement structure ensures a seamless fit.Paired with the AP-FITx2 dynamic binding system, it locks the arch and adjusts to the instep, adapting automatically to different foot shapes for a truly adaptive fit, creating a technologically advanced and breathable upper.The heel uses bifurcated sponge design for a secure fit during racing without slipping off.HiFoamPEBA Integrated Super MidsoleAdopts brand-new PEBA one-piece molding technology.While reducing the weight of the midsole, it features higher density, better anti-degradation performance, enhanced resilience and toughness, improving energy feedback efficiency for superior rebound.Compared with the KM3, the forefoot is widened by 3mm and the heel by 1mm, enhancing grip while maintaining athletic flexibility and greater stability.AGCS All-Weather Wear-Resistant & Non-Slip OutsoleAll Ground Control System The outsole is made of polyurethane material, providing stronger grip, better anti-slip performance on wet surfaces, and superior wear resistance.Compared with the KM3, the outsole tread density is increased to extend the lifespan of the running shoe.