An insulated jacket, also known as a PARKA, is a type of coat that is designed to keep the wearer warm in cold weather. It is usually made from a waterproof and windproof material, such as nylon or polyester, and is often filled with down or synthetic insulation. The hood and hem of the jacket are usually lined with fur or faux fur for extra warmth. Insulated jackets are popular among outdoor enthusiasts and are often used for activities such as skiing, snowboarding, and hiking.