Tubolito S-Tubo Road Tube The Tubolito S-Tubo Road Tube is a featherweight at 23g, which will get you rolling quicker thanks to less rolling resistance which outpaces standard rubber tubes yet is comparable to latex tubes. With 78% smaller packed size and the same puncture resistance as standard 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. Ready for disc brakes and guarantees a lightweight set up that'll have you enjoying your rides with less worries in mind. Tubolito is setting up to be the new face of cycling tubes in a world being dominated by tubeless set ups. Features23g tyre width: 18-28mm Valve valve: 42mm, 60mm, 80mm (40mm valve + 40mm valve extender) Not recommended with rim brakes | Tubolito | S-Tubo Road Tube 700 X 18-28Mm, 60Mm Presta Valve, Disc Brake Only | Rubber