Kenda K1083A 26x2.10' Happy Medium Folding MTB Mountain Bicycle Tire - Black Two tires in one - fast rolling/accelerating center tread paired with an aggressive outside edge for cornering assurance Eric Carter Signature Series Knob heights and profiles are designed for seamless transition from the tire's center to the edge knobs A universal design that is applicable to all types of riding and racing Cross country versions feature lightweight single-ply casings and DTC compound for performance