Excellent race tyre for very muddy conditions. Deep knobs make this one of the gripiest CX tubulars we've ever ridden. The "open tubular" design uses the constuction techniques of a tubular with the practicality of a clincher tyre. Technical featuresUse: Cross Racing: Deep MudSize: 700Tire Width: 33 mmRim Width: 15-19 mmWeight: 370 grTPI: 300Bead: AramidCasing: SuperPolyFlat protection: PPSBAR: 2-6PSI: 30-90Due to the extra supple nature of this tyre we recommend reading the Fitting Information from Challenge