The One tire redone for gravel use features densely packed micro knobs and a round profile. ADX – Addix compound found on the Performance Line made to serve as an all-around well balanced compound for all uses. RCGD - RaceGuard - A synthesis of special India rubber and several layers of nylon fabric offers very effective protection against penetration punctures while minimizing penalties. DD - In addition to the RaceGuard protection belt there is an effective fabric protector on the sidewall as well for dual layer protection