Thermal fabrics are specially designed materials that help retain body heat, making them ideal for cold weather clothing. These fabrics often feature insulating properties that trap warm air close to the skin, providing comfort and warmth during chilly conditions. Common examples include fleece, wool, and certain synthetic blends. In addition to warmth, thermal fabrics are often lightweight and breathable, allowing for ease of movement. They are frequently used in outdoor gear, such as jackets and base layers, to enhance performance in activities like hiking and skiing. Brands like The North Face and Columbia often incorporate thermal fabrics in their products.