Compact Mummy || Reactor Extreme Sleeping Bag Liner
Compact Mummy
You can ‘wear’ your Reactor Extreme outside your tent Contrasting colors: easy entry, easy drawcord location Warmth-trapping hollow-core fibers + infra-red ceramic pigments Reactor Extreme Sleeping Bag Liner Shoulder / footbox openings match Sleeping Bag Free-Flow zips Packs compactly into supplied stuff sack
40% off
Compact Mummy || Reactor Extreme Sleeping Bag Liner
Compact Mummy
You can ‘wear’ your Reactor Extreme outside your tent Contrasting colors: easy entry, easy drawcord location Warmth-trapping hollow-core fibers + infra-red ceramic pigments Reactor Extreme Sleeping Bag Liner Shoulder / footbox openings match Sleeping Bag Free-Flow zips Packs compactly into supplied stuff sack
40% off

Ultralight / Backpacking

Reactor Extreme Sleeping Bag Liner

$79.95 $47.97
  • Size

View Tech Specs

Final Sale This item cannot be returned or exchanged.

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Highlights

Length78in | 198cm

Packed Weight12.5 oz | 354.4 g

Packed Size6 × 3 × 5 in | 15 × 7.5 × 12 cm

Performance
Weight
  • Ultralight
  • Lightweight
  • Midweight
Packability
  • Ultra Compact
  • Compact
  • Midsize
Climate
  • Warm
  • Cold
  • Extreme Cold
About The Product

An essential component in your sleep system, the Reactor Extreme liner with Thermolite® Pro fabric utilises innovative infra red-absorbing ceramic pigments to give your system the thermal boost needed in colder-weather adventures. The soft, wicking stretch-knit fabric provides unmatched comfort and freedom of movement while still allowing the Reactor Extreme liner to fit any sleeping bag. Additionally, the drawcord footbox offers plenty of ventilation and the versatility of walking around camp while still wearing your liner if needed.

Product Features
  • Thermal boost to retain heat and warmth. As the core of your sleep system the Reactor liner extends the performance of your sleeping bag and sleeping mat in the coldest of conditions
  • Thermolite® Pro technology using knitted, hollow-core fibres and infrared-absorbing ceramic pigments to reflect your body's heat back for enhanced warmth and comfort
  • Drawcord footbox and shoulder openings can be opened or closed for optimal comfort and integrates perfectly with the footbox of our Free-Flow Zip system in select Sea to Summit sleeping bags
  • HeiQ Fresh odour control technology helps keep the liner fresh even after extended use
  • Knitted fabric provides incredible stretch and freedom of movement in this mummy-shaped liner and works perfectly with sleeping bags of any shape

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Compact Mummy || Reactor Extreme Sleeping Bag Liner

Reactor Extreme Sleeping Bag Liner Compact Mummy with Drawcord

Compact Mummy || Reactor Extreme Sleeping Bag Liner

Reactor Extreme Sleeping Bag Liner Compact Mummy with Drawcord

Description || Reactor Extreme Sleeping Bag Liner

Features

  • Thermal boost to retain heat and warmth. As the core of your sleep system the Reactor liner extends the performance of your sleeping bag and sleeping mat in the coldest of conditions
  • Thermolite® Pro technology using knitted, hollow-core fibres and infrared-absorbing ceramic pigments to reflect your body's heat back for enhanced warmth and comfort
  • Drawcord footbox and shoulder openings can be opened or closed for optimal comfort and integrates perfectly with the footbox of our Free-Flow Zip system in select Sea to Summit sleeping bags
  • HeiQ Fresh odour control technology helps keep the liner fresh even after extended use
  • Knitted fabric provides incredible stretch and freedom of movement in this mummy-shaped liner and works perfectly with sleeping bags of any shape

Design Details

Better Warmth-Retention by Design

Better Warmth-Retention by Design

 A thermal boost layer for cold-weather sleep systems thanks to the hollow core fibers and a knitted structure that traps insulating air. 

Stretchy and Practical

Stretchy and Practical

Works with any shape of sleeping bag thanks to the soft, stretch-knit material. Adapt to your climate needs with shoulder and footbox openings.

Technical Features

HEIQ Fresh
Thermolite Pro
Thermolite Eco Made

Tech specs

  • Materials
    100% Polyester
Compact Mummy with Drawcord
Mummy with Drawcord
  Compact Mummy with DrawcordMummy with Drawcord
Weight342 g12.1 oz364 g12.8 oz
Dimensions198 × 80 cm78 × 31 in216 × 80 cm85 × 31 in
Packed Size15 × 7.5 × 12 cm6 × 3 × 5 in15 × 7.5 × 12 cm6 × 3 × 5 in
Recommended User Height177 cm69.69 in198 cm77.95 in

Frequently Asked questions

Does the Reactor Extreme liner have a zipper?

No - to keep weight and packed volume down, we did not include a side zipper. Snaps at the shoulders mean a wider opening than some liners for entry and exit (and the drawcord footbox allows you to vent your feet or hitch up the liner and walk around camp)

Can the Reactor Extreme liner be machine washed?

Yes. It can be washed in a machine with normal supermarket detergent - but avoid fabric softeners which reduce wicking performance. Machine dry on a cool/low setting (no dryer sheets) or air dry

How much warmth does a Reactor Extreme add to a sleeping bag?

This depends on how well your sleeping bag retains warmth (not the same as its temperature rating), how well your pad insulates (not the same as its R-Value) and a lot of other factors. You should see a fairly solid boost if the liner is used with an appropriate sleeping bag and pad.

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