Blood Flag koozie
Collapsible foam can koozie, with image on the front.

The Blutfahne, or Blood Flag, was a Nazi Party swastika flag that was carried during the attempted coup d’etat Beer Hall Putsch in Munich, Germany on 9 November 1923, during which it became soaked in the blood of one of the SA men who was murdered.
It subsequently became one of the most revered objects of the NSDAP. It was used in ceremonies in which new flags for party organizations were consecrated by the Blood Flag when touched by it.