Freeze indicators providing a visual indication of exposure of the freeze
indicator to a freezing or near-freezing temperature and their
manufacture are disclosed. The freeze indicators employ colloidal
dispersions as active elements and include flexible freeze indicators,
freeze indicators protected against drying out and freeze indicators
employing core shell composites, for example gold coated pigments as
active indicator elements. Also disclosed are: a combination freeze
indicator and threshold temperature indicator; a combination threshold
indicator and cumulative temperature indicator; and three-way combination
indicators that can provide indications of cumulative past temperature
exposure, exposure to freezing temperatures and exposure to a temperature
above a threshold.