Technical and aesthetic evolution of Bushido and footwear for skyrunning competitions: super light, grippy, aggressive and guaranteed for perfect stability on any off-road surface. Thanks to the STB Control construction, the TPU skeleton on the medial side of the shaft extends under the midsole and thus stabilizes the footwear. The shoe thus better wraps the foot and offers more stability through the cooperation of the upper and midsole. Since heavy stabilizers can be dispensed with, the shoe is lighter. The sole with dual rubber compound FriXion Red presents differentiated surfaces: the outer rounded lugs, which extend laterally to the midsole, form a gradual contact angle on the ground, whereby stability is maintained even with extreme torsion of the foot. This ensures safe walking even in difficult conditions.