Hi together, after we have come to the conclusion here several times in the discussion about nitrogen fillings that this belongs more to the region of faith and hope than leads to effective, sense- & measurable results, I see this ad this morning. Also a research on their website does not reveal any detail information. So what is hidden behind the powerful product name “Power Air”? I guess nothing good … 😉 Good ride! Torsten – the XC fan (… and also costs nix – like hot air ;-)) P.S.: Just so nothing, but the apparently self-made product with the tyre specialist Vergölst. May I guess that the term “nitrogen filling” was simply replaced by the nicer sounding name “Power Air”?