Schwalbe marathon plus tour tyre smartguardthe new flat less tire a heavy duty trekking tread for asphalt or offroad allows this versatile tire to always feel at home whether in everyday use or on long tours the robust structure is an effective damage defense that is twinned with smartguard the most effective puncture protection belt for bicycle tires features size26 x 175 etrto47 559 performancesmartguard compoundendurance psi45 70 weight980g epi67 load115kg size26 x