Vittoria Terra Mix 40-622 Gravel Tire Whether it's Gravel or Cyclocross, one thing is certain ... the conditions of the course change all the time. As you approach the starting line, be sure you have the performance advantage of the Terra Mix tread for all conditions, regardless of the terrain. At the heart of the design is a fast rolling center ridge, designed to minimize rolling resistance while still providing safe braking traction. Cornering and off-camber work is handled with confidence by alternating open shoulder lugs. These fins are shaped to allow a smooth feel for pavement and hard surfaces, while still offering a solid and effective edge for grass and clay. The unique 3C Graphene compound structure places 3 unique compounds where you need them most, increasing performance. If you are looking for that "one-of-a-kind" tire to do it all.