An ushanka is a Russian fur cap with ear flaps that can be tied up to the crown of the cap, or tied at the chin to protect the ears from the cold. In the English-speaking world, it is referred to as a shapka, from the Russian language word for "hat". Ushanka literally translates as "ear-flaps hat". Though Russian hat ushankas are a distinctly Russian hat the wearing of fur caps of similar design is common throughout China, Eastern Europe and the former Soviet Union. Ushankas are also seen in American cities during cold winter months, especially in cities that have a sizeable East European immigrant population. In 1991, with the fall of the Soviet Union came the first wave of commercially imported Russian winter hats into the United States. Ushankas are often made from cheap sheepskin (tsigeyka), rabbit or muskrat fur, though artificial fur hats are also manufactured. Artificial fur has sometimes been referred to as "fish fur" since the material has no relation to any real fur.