Smooth center stripe for fast rolling on pavement and hardpack with densely packed micro knobs followed by larger rectangular knobs on the shoulders for cornering tractionHurricane is an excellent all-terrain tire for cyclists who want to be fast on the road and expect their tire to perform well off-roadRCGD - RaceGuard - A synthesis of special india rubber and several layers of nylon fabric offers very effective protection against penetration punctures while minimizing penaltiesADX â Addix compound found on the Performance Line made to serve as an all-around, well balanced compound for all usesStandard700x40622WireBeltedBk/Blk8558567RGRD/ADX/REFYesUPC/EAN/GTIN: 4026495864213