Resistant and light at the same time, it has outstanding characteristics in wood and cement tracks. When speed is key and you don\'t have time to think that the Challenge Track 320 Track Tubular is the one you can trust. The handmade tubulars are well known to professionals and this type of tyre is the preferred one for long stage races.To give the best possible grip on curves, Challenge use the latest materials for flexibility. The wheel avoids jumps and the tyre deforms and absorbs irregularities, acting in some way as a shock absorber. A special fabric is placed between the tread and the casing to increase puncture resistance using PPS (Puncture Protection System) technology. Comfort means reduced vibration that is harmful to the wrists and neck.