Vittoria Rubino Slick Tire - 700 x 23The Vittoria Rubino Pro slick has a slick racing tread for even greater speed on smooth, clean surfaces. In other respects the 150 TPI Rubino Pro Slick is identical to the Pro. Kevlar Endura 3D Compound has superior tread life, great grip on all roads and lower rolling resistance everything you need during high mileage training and racing Twin Thread design places the hard tread in the center where the wear occurs and uses a softer compound on the