The tunic is an essential and gender neutral part of fashion from Antiquity to modern times. However, their design and meanings often changed throughout history.
In some eras, the length of the tunic designated the social status of the wearer. In Ancient Rome, the tunic was worn airy and simple with a basic design. The Vikings and Germanic people wore their tunic less airy, with an undertunic, long sleeves, trousers and leg wrappings against the cold.
Tunics like this were worn throughout the medieval period.
Woolen fabrics CAUTION for woolen fabrics. These do not belong in the washing machine or in the dryer. Woolen materials, if they are soiled and can not be cleaned by brushing, treat with a sponge and foam carefully, if possible ONLY the place which is affected. It is best to brush the wool only.
Should a complete washing be necessary, then bring to the next cleaning, no self-experiments in the washing machine or by hand wash. That should be worth the good piece nevertheless.