Birkarls

Birkarls are small woolen socks from Sweden that are worn indoors. They are very cozy and soft, and keep your feet warm when it's cold outside. Birkarls are made by knitting wool yarn in a special pattern that makes them thicker and more cushiony than regular socks. They often have cute designs on them, like hearts or flowers. When you wear birkarls, it's like wrapping your feet in a warm blanket!