Lightweight, Compact Warmth
Get cold in your sleeping bag? The Sea To Summit Thermolite Reactor Sleeping Bag Liner will add up to 15°F of extra warmth to your sleeping bag. It's special Thermolite technology is lighter, warmer, and more compact than fleece. It can even be used on its own as a warm weather bag!
- More compact and warmer for its weight than fleece
- Adds up to 15°F of warmth to a sleeping bag, or can be used on its own as a warm-weather bag