Giro cycle helmet (just the straps/harness) (Stratford-upon-Avon CV37)

Redundant/damaged GIRO helmet - I'm looking for a Giro helmet to swap the straps for those on a new Giro helmet (the clasp/fittings etc on the new one aren't as good as those on the one I've just discarded) - it has to be a Giro for the attachments to the shell to work. Ideally the Pneumo or Savant model. Anyone please?