Sea to Summit Thermolite Reactor Liner

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Thermolite Reactor Liner


Increases sleeping bag performance by up to 8°C (14°F) with 80g/m² Thermolite® fabric. Ideal as part of a cold climate sleep system, or as a standalone bag in warm weather. The "Reactor" is made from Thermolite®, a hollow core fiber that provides extraordinary warmth for its weight and remains extremely breathable.


  • Packs into its own Ultra-Sil™ stuff sack
  • Lighter weight, more packable than fleece
  • Adds warmth to a sleeping bag
  • Mummy shape with a box foot
  • Draw cord hood with mini cord lock
  • Colour of liner is black
  • Weighs 248g (8.7oz)


Barcode # 9327868000197
Brand Sea to Summit

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