The French invented the 650B tire size. So it is only logical that Hutchinson leads the field in development in this "new" MTB segment. Hutchinson has 5 different tires in the 25.5"/650B category with more models to come. The Cobra was developed as the next generation of the legendary Python. The Cobra has closely spaced, fast rolling center knobs that provide excellent traction. The side knobs are shaped the same as Hutchinson"s aggressive DH/All Mountain tire the Cougar for outstanding cornering grip. All of this technology is wrapped in Hutchinson"s HARDSKIN casing with a tough textile layer to help prevent side all cuts and abrasions. The bead is Tubeless ready and this tire can be run tubeless with sealant or with traditional inner tubes.