The upper uses SENSIFIT technology to fit and wrap the foot in all directions. The sole traction design at the heel provides strong grip and is more adaptable to rough roads in the wild. Its 3DADVANCED CHASSIS chassis is made of lightweight materials and the nail-tooth design is more stable and protective. The wear-prone areas of the soles are made of CONTAGRIP high-wear-resistant material to cope with the test of long-distance running on urban hard roads.