An insulated jacket is a type of outerwear designed to keep the wearer warm in cold weather. It typically features a layer of insulation, which can be made from materials like down or synthetic fibers, to trap body heat. The outer fabric is often water-resistant or waterproof to protect against rain and snow. These jackets come in various styles and thicknesses, making them suitable for different activities, such as hiking, skiing, or everyday wear. Popular brands like North Face and Patagonia offer insulated jackets that combine functionality with comfort, catering to outdoor enthusiasts and casual users alike.