An extreme reaction of warmth!
Add a boost of warmth to your sleep system in cool or cold conditions with the Reactor Extreme Sleeping Bag Liner from Sea to Summit. Using Thermolite® Pro fabric with infra-red-absorbing ceramic pigments and Thermolite® EcoMade fibers, the Reactor Extreme takes thermal performance to the peak of warmth. The soft, moisture-wicking, stretch-knit fabric provides optimal comfort and ensures this liner fits any sleeping bag. The footbox opening offers plenty of ventilation and the versatility of walking around camp while still wearing your Reactor Extreme Sleeping Bag Liner if needed.
