Your go-to for classic base layer, Micro-Elite Chamois is synonymous with the Hot Chillys brand. The descendant of the first technical base layer created in 1984, Me Chamois has developed a reputation for being the most reliable, durable base layer made by our company.The secret to the success of Hot Chillys long underwear for women lies in the fabric's intimate blend of enhanced polyester and spandex fibers. These long women's thermal underwear bottoms are a highly technical, high-performing piece of thermal underwear that'll keep you warm for years to come. Boasting a 4-way stretch construction, Micro-Elite Chamois creates a snug and comfortable fit that won't get in the way of your daily activities. The midweight, quick-drying fabric helps to wick away moisture from the body, providing all-day comfort.