Mousse is made up of foam cells containing nitrogen under pressure. Its multi-cellular material replaces the inner tube for use solely in off-road competitions (motocross, enduro races, off-road rallies). It allows you to ride at speeds of up to 130km/h. Fitted in a tyre with dimensions corresponding to its cross section, it provides a pressure of around 0.9 bars after fitting on the recommended wheel rim. It prevents punctures due to perforation or impacts on uneven ground.