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. FEATURES: Additional puncture resistance belt at the center of the tread Extremely durable and lightweight folding tires for training Functionalized GRAPHENE 2.0 compound allows for improved cut resistance and overall strength Not approved for use with hookless rims SPECS: Color: Black Flat Protection: Tread ISO Diameter: 622 / Road / 29" Tire Intended Use: Road Tire Type: Clincher TPI: 26 Tire Bead: Folding Tire Diameter: 700c