Specialized’s new RapidAir Tire Sealant was custom-designed in tandem with their new RapidAir tires and Roval wheels to be the fastest tire setup out there. Through development, they learned that high-pressure, 24-30mm tires require a totally different formula to seal punctures. Specialized’s new exclusive mixture not only immediately seals punctures up to 3mm across a large range of temperatures, but unlike other sealants, RapidAir sealant will also keep its seal when you reinflate back to normal riding pressure.