Even on rough roads, Challenge's Strada Tubular rides great. It has a wider profile to take the sting out of broken pavement and dirt roads. It's hand made on their light and supple 260tpi SuperPoly casing with a long-wearing tread compound that grips great for excellent cornering, plus tough polyester in the sidewalls for durability. You also get a latex tube. Latex tubes are lighter, thinner and more flexible than butyl tubes, increasing your comfort, lowering rolling resistance, and helping to prevent flats, too.