Built to excel in all conditions and environments the ultra 110 gtx uses a waterproof breathable goretexreg membrane durable ultratactrade outsole and robust toe cap for maximum protection from mother naturersquos worst upper waterproof breathable goretexreg membrane breathable mesh pu coated leather upper midfoot support sole unit compression molded eva midsole ess midfoot shank and forefoot snake platetrade for protection from stone bruising ultratactrade rubber ou