Vittoria Zaffiro Pro G2. 0 tire the training tire benchmark includes a strong nylon casing, secure grip, and long tread life. Using a mixed tread design, optimized for all-around use, the Zaffiro works well in a range of training conditions. Add the durable folding nylon casing, and you get a performance oriented training tire at a great price! Setting the standard for training-specific tires, the Zaffiro Pro boasts a durable nylon casing, reassuring grip, and long-lasting tread. The mixed tread design is optimized for all-round use, making the Zaffiro Pro the perfect companion for training in all weather conditions. With a durable folding nylon casing, the Zaffiro Pro carries the Torch for great performance at a great price.