 Note that the Yiddish dialects are abundant with the use of such grammatical diminutives, in contrast to High German in which diminutives are used only rarely and in specific situations.The phonetic transition from "Röckel" to "Rekel" is due to the difficulty for Eastern European speakers to pronounce the German Umlaut-vowel ⟨ö⟩.Rekelech are generally made of a black or navy wool blend or of worsted wool.