The CrossMark II improves on the speed of its predecessor while improving grip in intermediate conditions. The legendary centre ridge still flies on hardpack, and the updated tread pattern provides better braking and cornering over a wide range of trail conditions. A great choice if you want to go fast everywhere.SpecificationDesigned for speed, revised for controlBest for Hardpack, Loose/Hard, MediumCornering Control 1 2 3 4Rolling Efficiency 1 2 3 4Compound: Dual Compound TechnologyBreaker: EXO Puncture ProtectionMax PSI: 50Bead Type: FoldingTubeless TyreTPI: 60Weight: 780gSize: 29" x 2.25"TechnologyDual Compound: Two compounds used within the tread of select tyres to offer lower rolling resistance and increased cornering gripTubeless Ready: Tubeless tyres give the rider with many benefits: the ability to run lower air pressures, which improves traction; lower rolling resistance when compared to a tube-type tyre; and less chance of flatting since there is no tube. Maxxis Tubeless Rea