Upper: Protective and breathable upper with a precise foothold / Tongue wings are designed to reduce slippage and enhance the step-in comfort and fit / Made on an updated D-width last that accommodates a broad set of consumer foot shapes Sole Unit: VECTIV 2.0 rockered midsole offers a carbon-fiber plate with stability wings and a forked design in the heel/forefoot for increased stability on technical terrain / Rocker midsole geometry engineered to create longlasting forward propulsion / Rocker has a 10 mm greater toe spring than the S21 version / Full-length foam midsole with 4 mm more cushioning compared with the S21 Enduris / 32 mm/26 mm stack height and 6 mm offset / Surface CTRL™ rubber outsole with 3.5 mm lugs