Product description x series x nitrosure to be a core line winner the plain toe classic upper sits on our tour proven tpu outsole and is powered by big bertha power cleats xfer nitro tpu tour outsole the xfer outsole combines lightweight tpu construction and force flex control channels for maximum stability and flex in the right places to ensure optimum traction through the golf swing ortholite inserts molded insoles provide lightweight breathable comfort retains structure moisture wickin