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Sea To Summit

Sea To Summit Thermolite Reactor EXTREME Liner

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For the most extreme cold-weather adventures. The Sea To Summit Thermolite Reactor Extreme adds up to 25-degrees to your sleeping bag. Or, in warmer weather can be used as a stand-alone sleeping bag. Adding a sleeping bag liner to your sleep system helps keep your bag clean and performing at its peak. The liner is machine washable for easy care.

  • Fabric: Thermolite polyester
  • Use: Backpacking, camping, and winter camping
  • Weight: 14 oz
  • Dimensions: 82 in L x 36 in W
  • Packed size: 6.5 in L x 4.5 in W
  • Adds up to 25°F / 15°C of warmth to a sleeping bag
  • Lighter weight, more packable than fleece
  • Mummy shape with a box foot
  • Drawcord hood with mini cord lock
  • Packs into its own Ultra-Sil™ stuff sack
Sea To Summit Thermolite Reactor EXTREME Liner
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    We ship the same day, whenever possible!

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  • Simple returns & exchanges

    We make it easy! See our return policy.