A long jacket is a type of outerwear that is typically knee-length or longer. It is usually made from heavier fabrics such as wool, and often has a belt or other fastening at the waist. The term 'long jacket' can also refer to a TUNIC, which is a garment that is usually knee-length or longer and is often worn over other clothing. Tunics are usually loose-fitting and have long sleeves, and may be made from a variety of fabrics.