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Reactor Compact Plus Liner (adds up to 20°F)
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Reactor Compact Plus Liner (adds up to 20°F)

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Sleep warmer, sleep better+ View tech specs
  • Shape
  • ColorRed & Black

BEST USE: Backpacking & Camping

WEIGHT: 9.3 oz | 263 g

LENGTH: 6 ft | 183 cm

PACKED SIZE: 5.75 x 4 in | 15 x 11 cm

Shipping & Returns

Our warehouse is actively shipping orders from 8am to 1pm MST Monday through Friday. Most orders ship in one business day, but the transit time can take up to 7 days, depending on your distance from Boulder, Colorado.

2nd Day and Next Day Air orders will ship same day if placed by 1pm MST, Monday-Friday (except holidays).

All orders are eligible for fast and easy returns within 60 days of purchase.

For more details, please check out our Help Center

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Reactor Compact Plus Liner (adds up to 20°F)
Reactor Compact Plus Liner (adds up to 20°F)
Description || Reactor Compact Plus Liner (adds up to 20°F)


The THERMOLITE® Reactor Compact sleeping bag liner is the ideal choice for gram counters under six feet who want to add warmth to their sleep system. The world’s first ‘hybrid’ sleeping bag liner uses a combination of two weights of THERMOLITE® fabric, with the warmer fabric strategically positioned across the torso and in the footbox. The THERMOLITE® fibers work like the hollow structure of a polar bear's fur, which traps extra insulating air. The Reactor Compact Plus keeps your sleeping bag clean, plus it's super easy to wash.

Design Details

Technical Features


Tech specs

  • Added Warmth
    Up to 20°F / 11°C
  • Best Use
    Backpacking, Camping & Winter Camping
  • Comes With
    Ultra-Sil stuff sack
  • Material(s)
    Thermolite polyester fabric
  • Shape
Compact Mummy
Compact Mummy
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