Durable doesn't have to be slow. The Gen 2 Re-Fuse features a revised tread pattern, a new compound, and updated puncture protection to create a faster, lighter, and even more durable tire. Slick center with micro knobs for cornering control Full-silica, all-season rubber compound New MaxxShield represents the ultimate in flat protection, beginning with the SilkShield bead-to-bead protection and added K2 (Aramid Composite) layer under the tread for unparalleled durability Specifications Flat ProtectionTread and SidewallTPI60ColorBlackWeight301Defined ColorBlackISO Width (mm)28ISO Diameter622 / Road / 29"Tire Intended UseRoadTire Intended UseGravelTire Diameter700cTire BeadFoldingLabeled Size700 x 28Tire TypeClincherPSI115