Introducing the Reactor Liner, your ultimate companion for cold-weather adventures. Powered by advanced Thermolite® Pro fabric, this liner utilizes innovative infrared technology to deliver exceptional warmth without compromising on comfort. The stretch knit design ensures unparalleled freedom of movement, making it perfect for a variety of outdoor activities. Whether you're hiking, skiing, or simply braving the winter chill, the Reactor Liner offers the versatility and performance you need. Stay warm and comfortable in any condition with this high-quality, durable liner.