Veloflex's lightest tire, designed for time trialing, hill climbing or wherever a truly light weight tire is required. Built with a core spun cotton carcass, 350 threads per inch. Features a Kevlar puncture resistant belt under the tread. Weights in at just 130 grams. Tire built with gum sidewall, and narrower section. No synthetic tire can match the silky smooth ride of a Veloflex tire. Tread of all natural rubber offers superior road adhesion in all weather conditions. Veloflex tires are among the most widely used in the European pro peloton. Up to 150 psi. 700 x 20 black with gum siewall only