Schwalbe schwalbe one road tyre v guardthe name alone indicates how significant this new trye is for schwalbe it is the fastest and at the same time most reliable competition tyre they have ever made it is manufactured in a separate facility built exclusively for the production of this new top class tyre features sizeetrto 23 622 700x23c 25 622 700x25 28 622 700x28c typefolding compoundonestar executionevo skinlite pressure85 145psi 23c 85 130 psi 25c 85 115 p