Thermal leggings are a type of clothing designed to provide warmth and insulation during cold weather. Made from materials like polyester and spandex, they are often lightweight yet effective at trapping body heat. These leggings are popular for outdoor activities, such as hiking or skiing, as well as for everyday wear in chilly conditions. Many thermal leggings feature moisture-wicking properties, which help keep the skin dry by drawing sweat away from the body. They come in various styles and thicknesses, catering to different preferences and activities. Some may also include added features like flatlock seams for comfort and elastic waistbands for a secure fit.