Concentration camp inmate hat

This hat was presumably worn by an inmate of Theresienstadt concentration camp and was found at the Stadni film company.
After the war is was pretty common that Concentration camp hats, jackets and many other original uniforms from Theresienstadt were used at the Stadni film company in Czech republic.
The hat is made of recycled wool, which can be recognized by the diversity of colors on the gray stripes.