Reactor™ – THERMOLITE®Our most popular sleeping bag liner! The Reactor is made from 80g m THERMOLITEthe lightest weight THERMOLITE fabric available. THERMOLITE is a hollow core fibre that provides amazing warmth for its weight and remains extremely breathable. The Reactor adds up to 8C of warmth to your sleeping bag or can be used alone as a warm weather bag. Adapts to varied temperatures and humidi Lighter weight, more packable than fleece Mummy shape with a box foot
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