Woolen felt industrial products, made from wool, are an ancient and long-standing fabric. Its production method has been widely spread in ancient Rome and is a well-known handmade technique in Europe. Due to its high-quality properties such as non-woven, one-piece formability, warmth retention, waterproofing, flame resistance, color fastness, and thermal insulation, many brands have started using wool as a material for handmade crafts, thus elevating wool felt handicrafts to the realm of art. Although wool fiber has natural anti fouling properties, if accidentally contaminated with dirt, it still needs to be treated as soon as possible. Do not use warm water, hot water, or bleach to clean stains on wool products. Hand washing or regular washing machines can also easily damage wool fibers, causing them to pill and deform.