IDEAL USE: CROSS COUNTRY/ MARATHON - HARD TO MEDIUM CONDITIONS Panaracer's fastest XC tyre is one of the lightest around. The full tread pattern is combined with the grippy zsg natural compound for minimal rolling resistance over a range of trails. Just as fast and just as grippy as the XC, the Razer MX low profile tread pattern and zsg natural compound help you blast along dry trails and tracks in complete confidence. The larger 2.3??? volume of the mx provides the extra comfort needed for longer days out.