Vredestein Fortezza Tricomp Slick Bicycle Tire (Anthracite/Yellow, 700 X 23) Lightweight competition tire; only 180 grams! Superior grip in all weather conditions The slick profile guarantees an extremely low rolling resistance 220 TPI casing provides optimal comfort and excellent ride quality Sportex Portection Layer features tightly-woven polyamide fiber, reducing the risk of getting a puncture to virutally zero.