The Sea To Summit Reactor Liner is sleeping bag liner made from 80g/m²Thermolite® fabric.
Thermolite® is a hollow core fibre providing a high warmth to weight ratio while remaining exreamly breathable. The Reactor Liner will add up to 8°C to a sleeping bags warmth. Lighter and more packable than fleece, in warmer weather the liner can be used on its own as a super light sleeping bag.
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Insulating sleeping bag liner, adds up to 15°C. 399g.