For sewing historically authentic medieval headwear, natural fabrics such as linen and wool are particularly suitable, as these were widely used in the Middle Ages. While linen is ideal for light bonnets or linings, woolen fabrics such as boiled wool or finer wool cloth are suitable for warmer headwear like hoods or felt caps. For high-ranking individuals or the nobility, luxurious materials such as real silk, brocade, or silk velvet can also be used.