Hutchinson Fast'Air Latex Aerosol Inflator Fast'Air simultaneously repairs a puncture and inflates the tire at the same time The latex based mousse is injected through the tire valve and is porpelled by CO2. The CO2 inflates the tire, up to 90psi. Fast'Air is a perfect lightweight solution for tubeless conversions or for extra protection in Road Tubeless tires. The lightweight latex is distributed evenly aroud the inside of the tire producing an air tight seal. Perfect for Tirathletes and Mountainbike racers to carry during races. No need to replace a punctures tire. Just install Fast'Air and you're back in the race in seconds