The xn pro is intended for firmer drier conditions and has the highly studied diamond tread design which has side knobs for grip when hardpack gives way to loose dirt superfine casings give all vittoria39s cross tyres their signature silky ride light weightness for great acceleration great puncture resistance even at low pressures plus a competition derived offroad tread compound no need for compromise now you can run tubulars or clinchers throughout the cross season with the same outs