Vittoria Zaffiro Pro Black 700 x 25 G2 + TubeModern looking performance tire The industry standard in performance training tires is back with a refreshed design, and increased performance! The subtle centre grooves and shoulder texture retain the secure feel of the Zaffiros of the past while streamlining the look and feel for the future. The alternating slick profile and Graphene compound mimic the feel of the Zaffiros higher end siblings while adding durability, and a more approachable price