For sporty MTB's and Trekking bikes. The Double Fighter is back! It rolls smoothly and quietly on asphalt. Its side lugs give it the right tracking bite on park and gravel paths. The ideal combination for turning a proven knobbly all-terrain tire into one good for zipping around the metro area. It turns a knobbly all-terrain bike into a nimble city runabout. Rolling easily on asphalt, the exposed outer knobs bite firmly on sharp gravel and park paths. Durable casing and long-lasting tread for sporty leisure cyclists.