Pirelli Cinturato SmarTube Tube - 700 x 33 - 45mm, 60mm Presta Valve

A TPU inner tube for 700c gravel and adventure tires from 33 to 45mm, the Pirelli Cinturato SmarTube targets gravel and endurance riders who want a fast, packable spare or a permanent tube setup that drops rotating weight. The 49g claimed weight (independent reviews have weighed 52g) sits well under a comparable butyl tube, and the compact packed size slips into a jersey pocket alongside a CO2.

The 60mm Presta valve is sized for mid to deep gravel and aero road wheels, and the 33 to 45mm fit range covers most of the modern gravel category, from skinny all-road rubber to wider mixed-surface tires.