Self-Sealing Tyre Technology is a liquid-gel solution. It prevents punctures, rim leaks and bead leaks from occurring. SSTT lengthens tyre life by up to 25% and may increase fuel efficiency by up to 3%. SSTT is SABS Tested and is non-toxic, non-hazardous, non-flammable and biodegradable lasting the whole life time of the tyre.