Jewish Hats were originally worn by selection but became compulsory to be worn in Europe beyond 1215 for grown male Jews when outside an enclave to differentiate themselves from others. Like Phrygian hats, they resemble the hat that might have begun in pre-Moslem Persia, like the hat used by Jews of Babylonia.

In Europe, Jewish hats were found in France from the 11th century, and in Italy from the 12th, presumptively arriving from the Moslem world. According to Jewish law, observant Jews should have their heads enclosed all the time. The hat is worn also in Christian paintings by figures like Jesus and Saint Joseph. Though made once obligatory, the hat deliberately hitherto varied from hats used by Christians, being seen by Jews in a dark light. A law in 1267 ordered that Jews, who had quit wearing the pointy hats, were to wear them and that the law be made mandatory. The 4th Council of Lateran in 1215 dictated that Muslims and Jews should be differentiated by their attire according to the principle being given. In a few provinces the attire of Saracens and Jews differentiates them away from Christians but the degree of difference has diminished in others so that they can’t be recognized by any differentiating values. As an effect, in fault Christians may have intercourse with Saracen women or Jewish, and Saracens and Jews may have relations with Christian ladies.
Due to the offense of such an accurst mixing, religious authorities will continue to have an imminent, compelling reason under the guise of offense, to require both genders in Christian lands to differ themselves globally from others by their attire.
To support this belief, a principle was created by Moses. Many local rules were enacted by rulers. The assembly decision reached by the Vienna Council in 1267 at Vienna made the hat compulsory. Pope Paul IV told in 1555 the Papal States that it should be a peaked yellow hat & from 1567 for 20 yrs it was a must in Lithuania, but now it is seen rarely in Europe. The different types of badge were more long-lasting. In a few pictures from some areas in the Middle Ages, Jewish leaders or rabbis use the Jewish hat whereas others do not.
The figure of hat is varying. Especially if it’s a Phrygian soft cap, rather more common in the former time, these hats feature a circular rim- obviously stiff – veering round to a top that edges in a point. Smaller editions resting atop the head are seen. At times a gaudy ring girds hats for an inch or 2 over the top. In 14th century a bobble appears at the hat top, and the tapering edge gets stockier with a constant width. The top hat gets rounded or flatter.
By the end of the Dark Ages the hats were replaced steadily by a kind of headdress admitting flared Eastern trend turbans and hats. And from the 15th century, the style trended toward broad flat hats, loose turbans and berets. Fur hat models from Settlement also stay related with Jews as far as the 18th century. For dhimmis to be distinct Muslims in public, their rulers prohibited them from wearing hats, while insisting them to use other distinctive attire.