It is an instand adhesive tube which is specially designed for rubber and is amjor innovation for tubeless tire repair.  For punctures less than 1mm, a simple drop of adhesive in the hole repairs your flat tire - wait one minute or two for the glue to dry, reinflate and ride.  For punctures greater than 1 mm, simply patch the puncture on the inside of the tire with this special adhesive.

Used by all Hutchinson's sponsored riders, the Protect'Air is essential complement for tubeless tires.  With an addition of only 60G per tire, this liquid prevents punctures up to 3mm and lasts up to 2 years.  The best compromise between lightness, efficiency, longevity and price.