Insulated fabrics are materials used in outdoor clothing and gear, including ski wear, to provide extra warmth for the wearer. These fabrics are typically made from synthetic fibers, such as polyester or nylon, and can be treated with insulation, such as Thinsulate or PrimaLoft, to enhance their thermal properties. Insulated fabrics are often used in mid-layer and outerwear clothing, including ski wear, to provide extra warmth and comfort for the wearer.