The Reactor Extreme inner sleeping bag is made from Thermolite® Pro , which contains ceramic pigments that absorb infrared rays and provide your sleeping system with additional thermal protection in cold weather.

The soft, stretchy knit material provides comfort and freedom of movement, while allowing the Reactor Extreme to fit any sleeping bag. In addition , the drawstring at the bottom provides ventilation and practicality so that you can walk around camp while wearing the pad. The inner sleeping bag also has an opening for the arms.

HeiQ Fresh odor control technology helps keep the underlay fresh even after prolonged use.