Michelin lithion 2 tyres blue 23c free tubesthe flexible bead tyre for training purposesa1 airstop butyl tubes answer the needs of everyday cyclists for economical high quality inner tubes in each size airstop butyl tubes offer excellent puncture resistance and the consistently high quality for which michelin is famous contains two tyres and two tubesfeatures 2 tyres endurance excellent grip good performance 700x18 23c valve type a1 unthreaded 40mm presta valve 96g 52mm presta valve