The xfer pro is the flagship of the x series line designed to provide the ultimate in power it is loaded with xfer technologiesfeatures soft high performance clarino microfibre upper internal x cage stability wrap high recovery clarino microfibre x cage overlay xfer power wall no sew construction reduces hotspots injected rubber outsole with xfer dynamic traction technology superfeet pro contoured insole longitudinal flex channel strategically orientated pro flex pins cleats by softspikes s