Road: When you’re in a hurry: With only 23g the super-compact (when rolled up) S-Tubo-Road stands out with its very low rolling resistance which outclasses standard butyl tubes yet is comparable to latex tubes.   With its 78% smaller packing size and the same puncture resistance as standard butyl tubes the S-Tubo-Road is the perfect choice as a spare and can be the crucial factor when you’re riding long and hard. Specifically made for disc brakes (not suitable for rim brakes).   S-Tubo products are characterized by the reduced wall thickness of the tubes. Therefore they are even smaller, lighter and have a very low rolling resistance. S-Tubo-Road for instance is the lightest bicycle inner tube worldwide and does have a rolling resistance comparable to latex tubes.   S-Tubo is Tubolito's performance line. Despite all these characteristics S-Tubos have the same puncture resistance as standard butyl tubes. Due to the reduced wall thickness they are a little more prone to be harmed by potential heat during long and hard brakes so they are only ready for use in bikes with disc brakes.   Features Smallest and lightest road bike tube worldwide. Extremely low rolling resistance. Same strength as a standard butyl tubes. Perfect spare tube. Ready for disc brakes only. Weight: 23g.