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Sleeping bag liners are an excellent way to either add warmth to your sleep system, or protect your sleeping bag from your dirty self! Check out our Sea to  Summit liners which are some of the best for backpacking!
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Thermolite Reactor Liner
Thermolite Reactor Liner
Our Price: $59.95
The THERMOLITE® Reactor™ liner is our top seller in the sleeping bag liner range. It's an excellent cold weather option for those who need additional warmth. The hollow core fibers trap heat and offer extraordinary insulating properties. This is a super stretchy, soft, and comfortable choice with a mummy shape, foot box and a drawcord hood. Compact and lighter weight than fleece, this is a best seller for good reason.