The Reebok Premier Ultra KFS V running shoe features a synthetic and mesh upper with PlayDry lining for moisture management. Kinetic Fit system offers support and flexibility in critical areas of the foot. DMX Shear gives vertical and horizontal cushioning and reduces stress of heel impact. Removable EVA sockliner accommodates orthotics. DMX Foam. Forefoot flex grooves and transition bridge. DMPRTEK rubber outsole with carbon rubber heel strike.