The Russian hat with ear flaps is called an ushanka. It is a traditional fur hat that can be tied up to the crown of the cap or fastened at the chin to protect the ears and neck from the cold. The hat is usually made of sheepskin, rabbit, muskrat fur, or artificial fur. The ushanka was developed in Russia in the 20th century, and a hat very similar to the modern ushanka appeared in 1918-1919 during the Civil War in Russia. The ushanka was introduced by Admiral Alexander Kolchak, who ruled in Siberia and was the White Army commander as the army uniform. Although the White Army lost the war, the hat was later widely used in the Soviet Union. Since 1940, the cap with earflaps became the uniform in the army and police.