CST Rock Hawk Folding Tire 60tpi construction Dual-compound rubber offers improved tread wear plus increased traction and control while cornering A layer of the EPS puncture protection is incorporated into the casing to help prevent flats Weight: 845g (26x2.25 folding), 909g (26x2.4 folding), 913g (29x2.25 folding), 974g (29x2.4 folding)