Nowadays, valenki are again in fashion. Valenki are traditional Russian footwear made of felt. They are colorful and very warm.
People learned to make felt long ago. Carpets, hats, clothes, and many other things were already made of it long before our era. A thousand and a half years ago, people already knew how to make shoes with felt inserts. Then they began to sew the felt and make slippers. And only about two hundred years ago, an unknown master made a felt boot without seams.
Technologically, the manufacture of valenki is not complicated. At first the wool is cleaned and rolled for a long time. Then it is washed, beat and dried. To give color, they use alum, bluestone and blue sandalwood, and for lightening they use whitewash mixed with fresh milk or bleach in the sun.
If you want to get smooth valenki you should rub them with a pumice stone. And if you need woolly valenki you should use a grater.