The Challenge Almanzo Tire is a 700x33c tubular tire designed for cyclocross and gravel riding. It features a 300TPI (threads per inch) casing, which is a high-quality construction that provides a supple and comfortable ride while also improving puncture resistance. The tire&';s tread pattern is optimized for off-road riding, with aggressive knobs that provide plenty of grip on loose and muddy terrain. The tire&';s width is also ideal for riding on rough surfaces, providing a stable and confident ride while absorbing bumps and vibrations. One thing to keep in mind with tubular tires like the Challenge Almanzo is that they require a special rim designed for tubular tires. They also require gluing or taping the tire to the rim, which can be a bit more involved than simply mounting a clincher tire. The Challenge Almanzo Tire is a great choice for cyclocross and gravel riders looking for a high-performance tire that can handle challenging terrain while still providing a comfortable ride.