schoeller softshell material 3M reflective elements Hybrid shell: blend of supple inner and tough outer materials for enhanced comfort and adaptability Base Cage: three TPU support elements in the center of the midsole area provide support over the longitudinal arch of the foot while descreasing fatigue and increasing sure-footedness and comfort. Rolling Concept: support and cushioning encourage the foot’s natural rolling movement to reduce fatigue and the risk of twisting your ankle.