Sea to Summit Reactor Mummy Liner

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Item #: 330554759

The Reactor is made from Thermolite®, a hollow core fiber that provides extraordinary warmth for its weight and remains extremely breathable. Adds up to 14 degrees F / 8 degrees C of warmth to a sleeping bag or, used alone, is the ideal warm weather bag.


  • Lighter weight, more packable than fleece
  • Adds up to 8°C / 14°F of warmth to a sleeping bag
  • Mummy shape with a box foot
  • Draw cord hood with mini cord lock
  • Packs into its own 3" x 5" sil nylon stuff sack


  • Length: 210 cm / 84"
  • Width: 90 cm / 36"
  • Weight: 248 g / 8.7 oz.
  • Temp. Rating: Up to 8°C / 14°F


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