Likewise, according to some Islamic interpretations of Hadith, men are required to cover everything from 'navel to knee'; with some men choosing to extend this to the traditional Islamic head covering taqiyah (cap), the male counterpart to hijab which closely resembles the Jewish yarmulke but is slightly larger in size. The taqiyah cap may vary in shape, size or color just as the hijab does, with many regional differences according to tradition and personal taste.