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 Addix compound found on the Performance Line made to serve as an all-around, well balanced compound for all usesStandard700x40622WireBeltedBk/Blk8567RGRD/ADX/REFYesUPC/EAN/GTIN: 4026495864213