Hutchinson Cobra Tubeless Light Mountain Bicycle Tire - 29 x 2.2 Cobra 29er is a fast rolling tire aimed at longer travel 29er bikes. Tubeless Ready technology allows this tire to be run 'tubeless' with the use of sealants such as Hutchinson's Protect'Air Max.. The bead of the tire is shaped to wrk with UST rims. Hardskin reinforced casing has a protective fabric woven into the casing to help resist cuts and punctures. Cobra is perfect in most conditions. The center knobs hook up well in dry, stony, sandy or wet conditions and the aggressive side knobs hang on in the turns. The Tubeless Ready design combines the tubeless capabilities of the Tubeless Light system with the lightweight of the Airlight casing. .