Vittoria Latex Tube 700x19-23 48mm Presta ValveVittoria Latex Tube 700c 51mm Presta Valve. At a scant 75 grams, the Latex offering of Vittoria's popular inner tube is lighter than ever. Latex has more elasticity than regular butyl rubber, which helps aid in the prevention of weeping and punctures. A side effect of this is a ride quality unmatched by any other tube material.8022530009409