It all started in 2001, when a rider named Stan Koziatek had an idea. Frustrated with punctured inner tubes and believing mountain bike tires could perform better without them, Stan developed a way to replace inner tubes with a liquid sealant. Stan’s system created a tire that sealed itself almost instantly when punctured, but that was only the beginning. With no inner tube, tires treated with Stan’s sealant offered more traction, more control, and more comfort. They also rolled faster. The performance advantages were tremendous, and soon racers at the highest levels of the sport were asking Stan to help them go tubeless. Today, riders and racers around the world rely on the tubeless technology Stan developed, and our sealant has been honored as one of the most important innovations in the history of cycling.