The beret was used all over Scotland since the 15th century. Originally it was worn by the Lowlanders and Border Reivers but later on the Gaelic clans started to wear it as well. The color of Scotland is blue and the blue berrets are known all over the world for their Scottish origin. The beret was used at Flodden, during the British Civil War, and during the Jacobite Revolts. The Jacobites wore a white flower / cocotte on the beret.
Washing prescriptions: Hand wash, possibly wool wash program in the washing machine. Wool has self-maintaining properties and needs only be washed when heavily soiled. Otherwise, you can just ventilate your garments in the open air.